小数混合运算专项练习276题(有答案)
0.11×1.8+8.2×0.11
2.34×99+2.34
5.4÷2.7×0.8
132×101
6.25÷1.25÷0.8
2.5×16.
6.33×101﹣6.33
1.56×1.7+0.44×1.7
1.8×[(3.41﹣2.9)÷0.03]
0.125×32×2.5.
1.258×18.5﹣0.258×18.5
8.48÷0.8×0.9
1.25×2.4
5.85÷(1.3+0.5)×6.
17.17﹣6.8﹣3.2﹣6.17
5.4×[(1.3+2.15)÷0.2]
8.4÷0.6+8.4÷0.4
16.8×10.1
10.9﹣0.9÷0.2+1.8
1.25×3.2×0.25.
1.36+4.85+2.64+6.15
98.5÷2.5÷4
5.4÷[2.5×(3.7﹣2.9)]
0.8×(4﹣3.68)÷0.01
83.7﹣12.83﹣0.17
5.96+13×(3.2﹣3.12)
4.32÷2.4×1.7;
16.2×4.5+3.8×4.5;
9.05﹣3.86﹣3.14;
7.28+0.72÷0.9.
4.32+5.43+6.68
17.17﹣6.8﹣3.2
5.29×9+5.29
16.8×10.1
2.74×9.5+5×0.274
0.36+9.6÷3.2.
3.75×25+6.25×25
25.46﹣8.23﹣1.76
2.9+7.1×10
1.25×32×0.25.
15.68﹣(7.78﹣4.32)﹣2.32
0.25×3.2×1.25
9.99×1.01
4.63×1.4+46.3×0.86
17.5÷0.8÷12.5
0.9+9.9+99.9+999.9.
2.9×99+2.9
25×11.2×4
23.25﹣6.75﹣3.25.
125×3.2×2.5
3.6×10.1
5.8×2.7+0.58×73
3.6+6.4×1.8
(1.48+3.02)÷(3.6×0.5)
(36.7﹣4.9)×101﹣31.8.
6.33×101﹣6.33
35.6﹣5×1.73
1.6×55.4﹣55.4×0.6
17.68÷5.2+2.7×1.5.
1.08×0.8÷0.27
102×0.45
22.78÷1.25÷0.8
0.34×101﹣0.34.
0.125×32×2.5
0.8×6.3﹣0.8×3.8
504÷3.2×2.08
(20﹣0.8×9)×5.7
2.4×1.5+3.6÷1.5
7.38﹣5.14+3.62﹣2.86
0.12×1.8+8.2×0.12
5.4÷[0.51÷(1.2﹣1.03)]
[(8.1﹣5.6)×0.9﹣1.05]÷0.04.
10.8﹣0.8÷(0.35+0.05)
8×[1÷(2.3﹣2.25)]
2.64×9.9+0.264
4.52+0.61+1.39+6.48
4.27﹣(1.96﹣1.73)
(294.4﹣19.2×6)÷(6+8)
12.5×0.76×0.4×8×2.5.
4.98+8.02×2.5
60.8﹣40.8÷2.5
0.8×69.6×12.5
4.98×99+4.9
6.48÷3.2÷2.5
1.2×7.6+7.6×6.8.
(9.4﹣5.8)×2.07
12.54﹣4.56﹣3.44﹣1.54
(9.36×5+9.36+9.36×2)×1.25
7.236÷0.18﹣14.3×0.02.
9.6÷0.4×0.25
29.7÷(5.85÷0.65)
7.4×9.9
3.84﹣2.7×0.64
8.68﹣8.68÷0.56×0.5
4.7×4.7+4.7+4.3×4.7.
2.72÷[(8.2﹣6.5)×0.5];
9.12+9.12×9﹣60.2;
28.4÷0.4÷0.25;
27.36﹣27.36÷7.6.
3.25×0.45+6.75×0.45
31.5﹣24.5÷3.5
7.5×102
6.3+3.7×2.8.
2.15+8.73+1.27+7.85
11.87﹣(8.2+1.87)
5.42﹣3.87﹣1.13
4.38﹣1.56+0.62﹣0.44
0.4×270×2.
(40+1.25)×8
(12.5﹣0.05)×8
2.6×8.5+8.5×7.4
9.9×6.9﹣6.9×3.9
5.6×99+5.6
2.5×(1.9+1.9+1.9+1.9)
7.2÷1.25÷8.
52.4﹣(15+0.6)÷1.6
9.87×99+9.87
46.8÷0.9÷0.4
5.5×17.3+6.7×5.5.
99×4.2+4.2
0.25×1.25×3.2
6.4×14+15×6.4+6.4
(1.3+1.3×0.125×8)÷(80﹣77.4)
4×(25+2.5+0.25)÷111
6.25÷〔(17.2﹣3.6×4.5)÷0.32〕
28.4×99+28.4
0.94×2.5﹣0.45
4×0.8×12.5×2.5
17.5÷0.25×17+13.
10.1×87
2.3+3.19÷(22﹣19.8)
1.25×7.2.
9.1﹣1.2÷6﹣6.24
7.3+12.8﹣3.8×2.3
(5.36+7.64)÷13×100
7.575÷[(5.63﹣1.88)×0.2].
7.5﹣(5.5+1.24)
0.26+15.68+9.74+2.32
13.26+9.55﹣3.26
6.1+3.9﹣6.1+3.9.
31.7÷0.63(保留2位小数)
2.4×1.5+3.6÷1.5
0.32×0.25+0.08÷4
(9.6+1.48÷3.7)÷8
5.8÷[4×(1.34﹣0.14)]
5.4÷[0.51÷(1.2﹣1.03)].
21.35﹣3.25﹣16.75
33.02﹣(148.4﹣90.85)÷2.5
32×2.5×0.125
18.1+(3﹣0.299÷0.23)×1.
67﹣(2.98+0.67)
8×16﹣73.8×6
(45+14)÷73+710.
13.7×0.125×8
0.8×[13﹣(3.12+5.28)]
102×0.56
1.53×1.7+0.47×1.7.
5.18+0.73+0.82
0.75×1.8÷1.5
12.5×7.1×0.8
6.12×99+6.12
8.6÷0.86+8×0.35
5.6×(18.5﹣8.5÷0.5)
0.125×4.78×80
2.8×3.6+1.4×2.8
(0.4+40)×2.5
78.7﹣17.7×3.6
18÷[0.3×(8﹣6.5)]
12.7+12.5+0.5.
91÷2.6÷0.05=
6.3×3.7+6.3×6.3=
(3.7+1.7×0.4)÷2.5=
7.28+3.2÷2.5=
0.74+0.9×7.4=
7.8÷0.125÷0.8=
37.5÷[0.3×(1.34﹣0.84)]
(2.5+27.75÷1.5)×1.6.
6.21﹣3.8+2.2
6.03+3.7+2.97
17.43﹣6.57﹣2.43
20.47﹣(1.47+6.8)
13.26+4.71+3.47+5.29
22.74+8.68﹣13.74.
10÷0.2÷2.5
64×4.5+3.6×45
1.25×3.2×0.8
14.5×102
14.64+3.7×2.8
8.4÷0.21÷0.5.
0.125×9×8×0.3
4.62÷5÷0.66
5.78×2.3+5.78+5.78×6.7
7.75×[20÷(3.24﹣3.04)].
1.25×0.5×8×0.2
0.97×9+0.97
5.4÷[3×﹙3.8﹣2.9﹚].
0.4×(3.2﹣0.8)÷0.15
5.7+1.9×0.2÷7.6
32.4×6.3+32.4×3.7
18.2﹣10.6×(0.9﹣0.75)
0.25×3.85×40
1.46×3.5+3.5×4.54.
7×12.5×0.8
4.7×3.6+4.7×6.4
1.45×[(2.8+4.4)÷2.4].
4.2×(6.18﹣3.03)+6.3
15.02﹣6.8﹣(1.02+1.2 )
0.6×[(5﹣0.68)÷1.2]
2.7÷4+6.3×0.25
(6.02+2.8 )÷0.4﹣2.05
3.08×3.5+6.2×3.08+3.08×0.3.
2.3+3.91÷(22﹣19.7)
21.6÷[64.8﹣(48.6﹣2.7×2)].
93.6×3.6+1.4×3.6
0.25×0.8×0.125×0.4
2.7×1.5﹣2.7
9.08+5.45+11.92+4.55
1.25×30×1.2×0.8.
0.6+0.94﹣0.208
4.85×1.25×8
(64﹣22.4÷1.4)×1.2
18.3﹣6.25﹣3.75
2.8×3.6+1.4×2.8
6.6÷〔14.5﹣(1.7+1.8)〕
0.25×9.87×4
36.7×2.1+10.8
8.45﹣0.45×0.1
0.73×102
7.8×5.6+2.3×4.4
76.3×27﹣76.3×17.
7.05×23.7+7.05×76.3.
[(7.6﹣5.2)÷0.4+2.54]×32.
17.68÷5.2+2.7×1.5
35.6﹣5×1.73
(1.1﹣0.78)×(2.7﹣1.95)
1.3×0.75×4
1.08÷1.8×1.2
50.4×1.9﹣1.8
0.82×0.25+1.18×0.25.
8.5×[(2.36+2.42)÷0.25]
3.9÷[(1.3+0.6)×6﹣3.6]
4.25×6.3+3.7×4.25
205×0.99
25.6﹣7.49﹣2.51
[2.5﹣(6.8﹣4.9)]×0.8.
102×4.5
3.4÷[(1.2+0.5)×5]
8×(20﹣1.25)
0.654+10.9×6.5
22.7×1.25×0.8
3.91×2.8+6.09×2.8.
6.23+3.09=
132.4﹣59.8=
6.62×0.84=
2.07÷0.023=
[20.026﹣(8.6+9.7)×0.92]÷30.19.
0.125×32×2.5
0.8×6.3﹣0.8×3.8
50.4÷3.2×2.08
204÷(3.4×0.5)
(43.26+2.34)÷7.5
(20﹣0.8×9)×5.7.
13.25﹣0.8+1.75﹣1.2;
2.5×99+2.5;
10.36+4.8﹣16.5÷5;
12.5×2.4.
38.78﹣19.59+41.22﹣30.41
2.74×4.86+4.86×6.26+4.86
0.08×(12.5+2.5)×0.1
25.92+(10.1﹣14.5×0.2)
0.487×12.5÷48.7
(8.16+2.09)÷[(10.3﹣9.3)÷0.4].
1.56×1.7+0.44×1.7
12.5×(7.2﹣1.9)×0.8
0.25×2010+20.10×75
30.8÷[(6.34﹣4.59)×4].
参考答案:
(1)0.11×1.8+8.2×0.11,
=0.11×(1.8+8.2),
=0.11×10,
=1.1;
(2)2.34×99+2.34,
=2.34×(99+1),
=2.34×100,
=234;
(3)5.4÷2.7×0.8,
=2×0.8,
=1.6;
(4)132×101,
=132×(100+1),
=132×100+132,
=13332;
(5)6.25÷1.25÷0.8,
=6.25÷(1.25×0.8),
=6.25÷1,
=6.25;
(6)2.5×16,
=(2.5×4)×4,
=40
(7)6.33×101﹣6.33,
=6.33×(101﹣1),
=6.33×100,
=633;
(8)1.56×1.7+0.44×1.7,
=1.7×(1.56+0.44),
=1.7×2,
=3.4;
(9)1.8×[(3.41﹣2.9)÷0.03],
=1.8×[0.51÷0.03],
=1.8×17,
=30.6;
(10)0.125×32×2.5,
=(0.125×8)×(4×2.5),
=1×10,
=10
(11)1.258×18.5﹣0.258×18.5,
=18.5×(1.258﹣0.258),
=18.5×1,
=18.5;
(12)8.48÷0.8×0.9,
=10.6×0.9,
=9.54;
(13)1.25×2.4,
=1.25×8×0.3,
=10×0.3,
=3;
(14)5.85÷(1.3+0.5)×6,
=5.85÷1.8×6,
=3.25×6,
=19.5
(15)17.17﹣6.8﹣3.2﹣6.17
=(17.17﹣6.17)﹣(6.8+3.2),
=11﹣10,
=1;
(16)5.4×[(1.3+2.15)÷0.2]
=5.4×[3.45÷0.2],
=5.4×17.25,
=93.15;
(17)8.4÷0.6+8.4÷0.4
=14+21
=35;
(18)16.8×10.1
=16.8×10+16.8×0.1,
=168+1.68,
=169.68;
(19)10.9﹣0.9÷0.2+1.8
=10.9﹣4.5+1.8,
=8.2;
(20)1.25×3.2×0.25
=(1.25×0.8)×(4×0.25),
=1×1,
=1
(21)1.36+4.85+2.64+6.15,
=(1.36+2.64)+(4.85+6.15),
=4+11,
=15;
(22)98.5÷2.5÷4,
=98.5÷(2.5×4),
=98.5÷10,
=9.85;
(23)5.4÷[2.5×(3.7﹣2.9)],
=5.4÷[2.5×0.8],
=5.4÷2,
=2.7;
(24)0.8×(4﹣3.68)÷0.01,
=0.8×0.32÷0.01,
=0.256÷0.01,
=25.6;
(25)83.7﹣12.83﹣0.17,
=83.7﹣(12.83+0.17),
=83.7﹣13,
=70.7;
(26)5.96+13×(3.2﹣3.12),
=5.96+13×0.08,
=5.96+1.04,
=7.
(27)4.32÷2.4×1.7,
=1.8×1.7,
=3.06;
(28)16.2×4.5+3.8×4.5,
=(16.2+3.8)×4.5,
=20×4.5,
=90;
(29)9.05﹣3.86﹣3.14,
=9.05﹣(3.86+3.14),
=9.05﹣7,
=2.05;
(30)7.28+0.72÷0.9,
=7.28+0.8,
=8.08
(31)4.32+5.43+6.68,
=4.32+6.68+5.43,
=11+5.43,
=16.43;
(32)17.17﹣6.8﹣3.2,
=17.17﹣(6.8+3.2),
=17.17﹣10,
=7.17;
(33)5.29×9+5.29,
=5.29×(9+1),
=5.29×10,
=52.9;
(34)16.8×10.1,
=16.8×10+16.8×0.1,
=168+1.68,
=169.68;
(35)2.74×9.5+5×0.274,
=2.74×9.5+0.5×2.74,
=2.74×(9.5+0.5),
=2.74×10,
=27.4;
(36)0.36+9.6÷3.2,
=0.36+3,
=3.36
(37)3.75×25+6.25×25,
=25×(3.75+6.25),
=25×10,
=250;
(38)25.46﹣8.23﹣1.76,
=25.46﹣(8.23+1.76),
=25.46﹣9.99
=15.45;
(39)2.9+7.1×10,
=2.9+71,
=73.9;
(40)1.25×32×0.25
=(1.25×8)×(4×0.25),
=10×1,
=1.
(41)15.68﹣(7.78﹣4.32)﹣2.32,
=15.68﹣7.78+4.32﹣2.32,
=(15.68+4.32)﹣(7.78+2.32),
=20﹣10,
=10;
(42)0.25×3.2×1.25,
=0.25×4×0.8×1.25,
=(0.25×4)×(0.8×1.25),
=1×1,
=1;
(43)9.99×1.01,
=(10﹣0.01)×1.01,
=10.1﹣0.0101,
=10.0899;
(44)4.63×1.4+46.3×0.86,
=46.3×0.14+46.3×0.86,
=46.3×(0.14+0.86),
=46.3×1,
=46.3;
(45)17.5÷0.8÷12.5,
=17.5÷(0.8×12.5),
=17.5÷1,
=17.5;
(46)0.9+9.9+99.9+999.9,
=1﹣0.1+10﹣0.1+100﹣0.1+1000﹣0.1,
=(1+10+100+1000)﹣(0.1+0.1+0.1+0.1),
=1111﹣0.4,
=1110.6
(47)2.9×99+2.9
=(99+1)×2.9,
=100×2.9,
=290;
(48)25×11.2×4
=25×4×11.2,
=100×11.2,
=1120;
(49)23.25﹣6.75﹣3.25
=23.25﹣(6.75+3.25),
=23.25﹣10,
=13.25 (50)125×3.2×2.5,
=125×8×0.4×2.5,
=(125×8)×(0.4×2.5),
=1000×1,
=1000;
(51)3.6×10.1,
=3.6×(10+0.1),
=3.6×10+3.6×0.1,
=36+0.36,
=36.36;
(52)5.8×2.7+0.58×73,
=5.8×2.7+5.8×7.3,
=5.8×(2.7+7.3),
=5.8×10,
=58;
(53)3.6+6.4×1.8,
=3.6+11.52,
=15.12;
(54)(1.48+3.02)÷(3.6×0.5),
=4.5÷1.8,
=2.5;
(55)(36.7﹣4.9)×101﹣31.8,
=31.8×101﹣31.8,
=31.8×(101﹣1),
=31.8×100,
=3180
(56)6.33×101﹣6.33
=6.33×(101﹣1),
=6.33×100,
=633;
(57)35.6﹣5×1.73,
=35.6﹣8.65,
=26.95;
(58)1.6×55.4﹣55.4×0.6,
=55.4×(1.6﹣0.6),
=55.4×1,
=55.4;
(59)17.68÷5.2+2.7×1.5,
=3.4+4.05,
=7.45
(60)1.08×0.8÷0.27
=1.08÷0.27×0.8,
=4×0.8,
=3.2;
(61)102×0.45
=(100+2)×0.45,
=100×0.45+2×0.45,
=45+0.9,
=45.9;
(62)22.78÷1.25÷0.8
=22.78÷(1.25×0.8),
=22.78÷1,
=22.78;
(63)0.34×101﹣0.34
=(101﹣1)×0.34,
=100×0.34,
=34
(64)0.125×32×2.5,
=(0.125×8)×(4×2.5),
=1×10,
=10;
(65)0.8×6.3﹣0.8×3.8,
=0.8×(6.3﹣3.8),
=0.8×2.5,
=2;
(66)504÷3.2×2.08,
=157.5×2.08,
=327.6;
(67)(20﹣0.8×9)×5.7,
=(20﹣7.2)×5.7,
=12.8×5.7,
=72.96
(68)2.4×1.5+3.6÷1.5,
=3.6+2.4,
=6;
(69)7.38﹣5.14+3.62﹣2.86,
=(7.38+3.62)﹣(5.14+2.86),
=11﹣8,
=3;
(70)0.12×1.8+8.2×0.12,
=0.12×(1.8+8.2),
=0.12×10,
=1.2;
(71)5.4÷[0.51÷(1.2﹣1.03)],
=5.4÷[0.51÷0.17],
=5.4÷3,
=1.8;
(72)[(8.1﹣5.6)×0.9﹣1.05]÷0.04,
=[2.5×0.9﹣1.05]÷0.04,
=[2.25﹣1.05]÷0.04,
=1.2÷0.04,
=30
(73)10.8﹣0.8÷(0.35+0.05),
=10.8﹣0.8÷0.4,
=10.8﹣2,
=8.8;
(74)8×[1÷(2.3﹣2.25)],
=8×[1÷0.05],
=8×20,
=160;
(75)2.64×9.9+0.264,
=0.264×99+0.264,
=0.264×(99+1),
=0.264×100,
=26.4;
(76)4.52+0.61+1.39+6.48
=(4.52+6.48)+(0.61+1.39),
=11+2,
=13;
(77)4.27﹣(1.96﹣1.73)
=4.27﹣0.23,
=4.04;
(78)(294.4﹣19.2×6)÷(6+8)
=(294.4﹣115.2)÷14,
=179.2÷14,
=12.8;
(79)12.5×0.76×0.4×8×2.5
=(12.5×8)×(0.4×2.5)×0.76,
=100×1×0.76,
=76.
(80)4.98+8.02×2.5,
=4.98+20.25,
=25.03;
(81)60.8﹣40.8÷2.5,
=60.8﹣16.32,
=44.48;
(82)0.8×69.6×12.5,
=(0.8×12.5)×69.6,
=10×69.6,
=696;
(83)4.98×99+4.9,
=493.02+4.9,
=497.92;
(84)6.48÷3.2÷2.5,
=6.48÷(3.2×2.5),
=6.48÷8,
=0.81;
(85)1.2×7.6+7.6×6.8,
=7.6×(1.2+6.8),
=7.6×8,
=60.8
(86)(9.4﹣5.8)×2.07,
=3.6×2.07,
=7.452;
(87)12.54﹣4.56﹣3.44﹣1.54,
=(12.54﹣1.54)﹣(4.56+3.44),
=11﹣8,
=3;
(88)(9.36×5+9.36+9.36×2)×1.25,
=9.36×(5+2+1)×1.25,
=9.36×8×1.25,
=9.36×(8×1.25),
=93.6;
(89)7.236÷0.18﹣14.3×0.02,
=40.2﹣0.286,
=39.914.
(90)9.6÷0.4×0.25,
=24×0.25,
=6;
(91)29.7÷(5.85÷0.65),
=29.7÷9,
=3.3;
(92)7.4×9.9,
=7.4×(10﹣0.1),
=7.4×10﹣7.4×0.1,
=74﹣0.74,
=73.26;
(93)3.84﹣2.7×0.64,
=3.84﹣1.728,
=2.112;
(94)8.68﹣8.68÷0.56×0.5,
=8.68﹣15.5×0.5,
=8.68﹣7.75,
=0.93;
(95)4.7×4.7+4.7+4.3×4.7,
=4.7×(4.7+4.3+1),
=4.7×10,
=47
(96)2.72÷[(8.2﹣6.5)×0.5]
=2.72÷[1.7×0.5],
=2.72÷0.85,
=3.2;
(97)9.12+9.12×9﹣60.2
=(1+9)×9.12﹣60.2,
=10×9.12﹣60.2,
=91.2﹣60.2,
=31;
(98)28.4÷0.4÷0.25
=28.4÷(0.4×0.25),
=28.4÷0.1,
=284;
(99)27.36﹣27.36÷7.6
=27.6﹣3.6,
=24
(100)3.25×0.45+6.75×0.45,
=0.45×(3.25+6.75),
=0.45×10,
=4.5;
(101)31.5﹣24.5÷3.5,
=31.5﹣7,
=24.5;
(102)7.5×102,
=7.5×(100+2),
=7.5×100+7.5×2,
=750+15,
=765;
(103)6.3+3.7×2.8,
=6.3+10.36,
=16.66.
(104)2.15+8.73+1.27+7.85
=(2.15+7.85)+(8.73+1.27),
=10+10,
=20;
(105)11.87﹣(8.2+1.87),
=11.87﹣1.87﹣8.2,
=10﹣8.2,
=1.8;
(106)5.42﹣3.87﹣1.13,
=5.42﹣5,
=0.42;
(107)4.38﹣1.56+0.62﹣0.44,
=(4.38+0.62)﹣(1.56+0.44),
=5﹣2,
=3;
(108)0.4×270×2.5,
=(0.4×2.5)×270,
=270;
(109)(40+1.25)×8,
=40×8+1.25×8,
=320+10,
=330;
(110)(12.5﹣0.05)×8,
=12.5×8﹣0.05×8,
=100﹣0.4,
=99.6;
(111)2.6×8.5+8.5×7.4,
=(2.6+7.4)×8.5,
=85;
(112)9.9×6.9﹣6.9×3.9,
=(9.9﹣3.9)×6.9,
=6×6.9,
=41.4;
(113)5.6×99+5.6,
=5.6×(99+1),
=560;
(114)2.5×(1.9+1.9+1.9+1.9),
=2.5×4×1.9,
=10×1.9,
=19;
(115)7.2÷1.25÷8,
=7.2÷8÷1.25,
=0.9÷1.25,
=0.72.
(116)52.4﹣(15+0.6)÷1.6,
=52.4﹣15.6÷1.6,
=52.4﹣9.75,
=42.65;
(117)9.87×99+9.87,
=9.87×(99+1),
=987;
(118)46.8÷0.9÷0.4,
=46.8÷(0.9×0.4),
=46.8÷0.36,
=130;
(119)5.5×17.3+6.7×5.5,
=5.5×(17.3+6.7),
=5.5×24,
=132
(120)99×4.2+4.2
=4.2×(99+1),
=4.2×100,
=420;
(121)0.25×1.25×3.2
=0.25×1.25×(4×0.8),
=0.25×4×(1.25×0.8),
=1×1,
=1;
(122)6.4×14+15×6.4+6.4
=6.4×(14+15+1),
=6.4×30,
=192;
(123)(1.3+1.3×0.125×8)÷(80﹣77.4)
=(1.3+1.3×1)÷2.6,
=2.6÷2.6,
=1;
(124)4×(25+2.5+0.25)÷111
=(4×25+4×2.5+4×0.25)÷111,
=(100+10+1)÷111,
=111÷111,
=1;
(125)6.25÷[(17.2﹣3.6×4.5)÷0.32]
=6.25÷[(17.2﹣16.2)÷0.32],
=6.25÷(1÷0.32),
=6.25÷3.125,
=2
(126)28.4×99+28.4,
=28.4×(99+1),
=28.4×100,
=2840.
(127)0.94×2.5﹣0.45,
=2.35﹣0.45,
=1.9.
(128)4×0.8×12.5×2.5,
=(4×2.5)×(0.8×12.5),
=10×10,
=100.
(129)17.5÷0.25×17+13,
=70×17+13,
=1190+13,
=1203
(130)10.1×87,
=(10+0.1)×87,
=87+8.7,
=95.7;
(131)2.3+3.19÷(22﹣19.8),
=2.3+3.19÷2.2,
=2.3+1.45,
=3.75;
(132)1.25×7.2,
=1.25×8×0.9,
=10×0.9,
=9
(133)9.1﹣1.2÷6﹣6.24
=9.1﹣0.2﹣6.24,
=8.9﹣6.24,
=2.66;
(134)7.3+12.8﹣3.8×2.3
=20.1﹣8.74,
=11.36;
(135)(5.36+7.64)÷13×100
=13÷13×100,
=100;
(136)7.575÷[(5.63﹣1.88)×0.2]
=7.575÷[3.75×0.2],
=7.575÷0.75,
=10.1
(137)7.5﹣(5.5+1.24),
=7.5﹣5.5﹣1.24,
=2﹣1.24,
=0.76;
(138)0.26+15.68+9.74+2.32,
=(0.26+9.74)+(15.68+2.32),
=10+18,
=28;
(139)13.26+9.55﹣3.26,
=13.26﹣3.26+9.55,
=10+9.55,
=19.55;
(140)6.1+3.9﹣6.1+3.9,
=6.1﹣6.1+(3.9+3.9),
=0+7.8,
=7.8
(141)31.7÷0.63≈50.32;
(142)2.4×1.5+3.6÷1.5
=3.6+2.4,
=6;
(143)0.32×0.25+0.08÷4
=0.08+0.08÷4,
=0.08+0.02,
=0.08+0.02,
=0.1;
(144)(9.6+1.48÷3.7)÷8
=(9.6+0.4)÷8,
=10÷8,
=1.25;
(145)5.8÷[4×(1.34﹣0.14)]
=5.8÷[4×1.2],
=5.8÷4.8,
≈1.21;
(146)5.4÷[0.51÷(1.2﹣1.03)]
=5.4÷[0.51÷0.17],
=5.4÷3,
=1.8
(147)21.35﹣3.25﹣16.75,
=21.35﹣(3.25+16.75),
=21.35﹣20,
=1.35;
(148)33.02﹣(148.4﹣90.85)÷2.5,
=33.02﹣57.55÷2.5,
=33.02﹣23.02,
=10;
(149)32×2.5×0.125,
=4×8×2.5×0.125,
=(4×2.5)×(8×0.125),
=10×1,
=10;
(150)18.1+(3﹣0.299÷0.23)×1,
=18.1+(3﹣1.3)×1,
=18.1+1.7×1,
=18.1+1.7,
=19.8
(151)67﹣(2.98+0.67),
=67﹣3.65,
=63.35;
(152)8×16﹣73.8×6,
=128+442.8,
=570.8;
(153)(45+14)÷73+710,
=59÷73+710,
=+710,
=710
(154)13.7×0.125×8,
=13.7×(0.125×8),
=13.7×1,
=13.7;
(155)0.8×[13﹣(3.12+5.28)],
=0.8×[13﹣8.4],
=0.8×4.6,
=3.68;
(156)102×0.56,
=(100+2)×0.56,
=100×0.56+2×0.56,
=56+1.12,
=57.12;
(157)1.53×1.7+0.47×1.7,
=(1.53+0.47)×1.7,
=2×1.7,
=3.4
(158)5.18+0.73+0.82,.
=(5.18+0.82)+0.73,
=6+0.73,
=6.73;
(159)0.75×1.8÷1.5,
=1.35÷1.5,
=0.9;
(160)12.5×7.1×0.8,
=(12.5×0.8)×7.1,
=10×7.1,
=71;
(160)6.12×99+6.12,
=6.12×(99+1),
=6.12×100,
=612;
(162)8.6÷0.86+8×0.35,
=10+2.8,
=12.8;
(163)5.6×(18.5﹣8.5÷0.5),
=5.6×(18.5﹣17),
=5.6×1.5,
=8.4
(164)0.125×4.78×80,
=0.125×4.78×8×10,
=(0.125×8)×(4.78×10),
=1×47.8,
=47.8;
(165)2.8×3.6+1.4×2.8,
=2.8×(3.6+1.4),
=2.8×5,
=14;
(166)(0.4+40)×2.5,
=0.4×2.5+40×2.5,
=1+100,
=101;
(167)78.7﹣17.7×3.6,
=78.7﹣63.72,
=14.98;
(168)18÷[0.3×(8﹣6.5)],
=18÷[0.3×1.5],
=18÷0.45,
=40;
(169)12.7+12.5+0.5,
=12.7+(12.5+0.5),
=12.7+13,
=25.7
(170)91÷2.6÷0.05,
=35÷0.05,
=700;
(171)6.3×3.7+6.3×6.3,
=6.3×(3.7+6.3),
=6.3×10,
=63;
(172)(3.7+1.7×0.4)÷2.5,
=(3.7+0.68)÷2.5,
=4.38÷2.5,
=1.752;
(173)7.28+3.2÷2.5,
=7.28+1.28,
=8.56;
(174)0.74+0.9×7.4,
=(1+9)×0.74,
=10×0.74,
=7.4;
(175)7.8÷0.125÷0.8,
=7.8÷(0.125×0.8),
=7.8÷0.1,
=78
(176)37.5÷[0.3×(1.34﹣0.84)],
=37.5÷[0.3×0.5],
=37.5÷0.15,
=250;
(177)(2.5+27.75÷1.5)×1.6,
=(2.5+18.5)×1.6,
=21×1.6,
=33.6
(178)6.21﹣3.8+2.2,
=2.41+2.2,
=4.61;
(179)6.03+3.7+2.97,
=(6.03+2.97)+3.7,
=9+3.7,
=12.7;
(180)17.43﹣6.57﹣2.43,
=17.43﹣(6.57+2.43),
=17.43﹣9,
=8.43;
(181)20.47﹣(1.47+6.8),
=20.47﹣1.47﹣6.8,
=19﹣6.8,
=12.2;
(182)13.26+4.71+3.47+5.29,
=(13.26+3.47)+(4.71+5.29),
=16.73+10,
=26.73;
(183)22.74+8.68﹣13.74,
=(22.74﹣13.74)+8.68,
=9+8.68,
=17.68
(184)10÷0.2÷2.5,
=10÷(0.2×2.5),
=10÷0.5,
=20;
(185)64×4.5+3.6×45,
=6.4×45+3.6×45,
=(6.4+3.6)×45,
=10×45,
=450;
(186)1.25×3.2×0.8,
=(1.25×0.8)×3.2,
=1×3.2,
=3.2;
(187)14.5×102,
=14.5×(100+2),
=14.5×100+14.5×2,
=1450+29,
=1479;
(188)14.64+3.7×2.8,
=14.64+10.36,
=25;
(189)8.4÷0.21÷0.5,
=40÷0.5,
=80
(190)0.125×9×8×0.3,
=(0.125×8)×(9×8),
=1×72,
=72;
(191)4.62÷5÷0.66,
=4.62÷(5×0.66),
=4.62÷3.3,
=1.4;
(192)5.78×2.3+5.78+5.78×6.7,
=5.78×(2.3+1+6.7),
=5.78×10,
=57.8;
(193)7.75×[20÷(3.24﹣3.04)],
=7.75×[20÷0.2],
=7.75×100,
=775
(194)1.25×0.5×8×0.2,
=(1.25×8)×(0.5×0.2),
=10×0.1,
=1;
(195)0.97×9+0.97,
=0.97×(9+1),
=0.97×10,
=9.7;
(196)5.4÷[3×﹙3.8﹣2.9﹚],
=5.4÷[3×0.9],
=5.4÷2.7,
=2 (197)0.4×(3.2﹣0.8)÷0.15,
=0.4×2.4÷0.15,
=0.96÷0.15,
=6.4;
(198)5.7+1.9×0.2÷7.6,
=5.7+0.38÷7.6,
=5.7+0.05,
=5.75;
(199)32.4×6.3+32.4×3.7,
=32.4×(6.3+3.7),
=32.4×10,
=324;
(200)18.2﹣10.6×(0.9﹣0.75),
=18.2﹣10.6×0.15,
=18.2﹣1.59,
=16.61;
(201)0.25×3.85×40,
=0.25×40×3.85,
=10×3.85,
=38.5;
(202)1.46×3.5+3.5×4.54,
=3.5×(1.46+4.54),
=3.5×6,
=21
(203)7×12.5×0.8,
=7×(12.5×0.8),
=7×10,
=70;
(204)4.7×3.6+4.7×6.4,
=4.7×(3.6+6.4),
=4.7×10,
=47;
(205)1.45×[(2.8+4.4)÷2.4],
=1.45×[7.2÷2.4],
=1.45×3,
=4.35
(206)4.2×(6.18﹣3.03)+6.3,
=4.2×3.15+6.3,
=13.23+6.3,
=19.53;
(207)15.02﹣6.8﹣(1.02+1.2 ),
=15.02﹣6.8﹣1.02﹣1.2,
=(15.02﹣1.02)﹣(6.8+1.2),
=14﹣8,
=6;
(208)0.6×[(5﹣0.68)÷1.2],
=0.6×[4.32÷1.2],
=0.6×3.6,
=2.16;
(209)2.7÷4+6.3×0.25,
=2.7×0.25+6.3×0.25,
=(2.7+6.3)×0.25,
=9×0.25,
=2.25;
(210)(6.02+2.8 )÷0.4﹣2.05,
=8.82÷0.4﹣2.05,
=22.05﹣2.05,
=20;
(211)3.08×3.5+6.2×3.08+3.08×0.3,
=(3.5+6.2+0.3)×3.08,
=10×3.08,
=30.8
(212)2.3+3.91÷(22﹣19.7),
=2.3+3.91÷2.3,
=2.3+1.7,
=4;
(213)21.6÷[64.8﹣(48.6﹣2.7×2)],
=21.6÷[64.8﹣(48.6﹣5.4)],
=21.6÷[64.8﹣43.2],
=21.6÷21.6,
=1
(214)93.6×3.6+1.4×3.6,
=(93.6+1.4)×3.6,
=95×3.6,
=(100﹣5)×3.6,
=100×3.6﹣5×3.6,
=360﹣18,
=342;
(215)0.25×0.8×0.125×0.4,
=(0.25×0.4)×(0.8×0.125),
=0.1×0.1,
=0.01;
(216)2.7×1.5﹣2.7,
=2.7×(1.5﹣1),
=2.7×0.5,
=1.35;
(217)9.08+5.45+11.92+4.55,
=(9.08+11.92)+(5.45+4.55),
=21+10,
=31;
(218)1.25×30×1.2×0.8,
=(1.25×0.8)×(30×1.2),
=1×36,
=36
(219)0.6+0.94﹣0.208,
=1.54﹣0.208,
=1.332;
(220)4.85×1.25×8,
=4.85×(1.25×8),
=4.85×10,
=48.5;
(221)(64﹣22.4÷1.4)×1.2,
=(64﹣16)×1.2,
=48×1.2,
=57.6;
(222)18.3﹣6.25﹣3.75,
=18.3﹣(6.25+3.75),
=18.3﹣10,
=8.3;
(223)2.8×3.6+1.4×2.8,
=2.8×(3.6+1.4),
=2.8×5,
=14;
(224)6.6÷[14.5﹣(1.7+1.8)],
=6.6÷[14.5﹣3.5],
=6.6÷11,
=0.6
(225)0.25×9.87×4,
=0.25×4×9.87,
=1×9.87,
=9.87;
(226)7×2.1+10.8,
=77.07+10.8,
=87.87;
(227)8.45﹣0.45×0.1,
=8.45﹣0.045,
=8.405;
(228)0.73×102,
=0.73×(100+2),
=0.73×100+0.73×2,
=73+1.46,
=74.46;
(229)7.8×5.6+2.3×4.4,
=43.68+10.12,
=53.8;
(230)76.3×27﹣76.3×17
=76.3×(27﹣17),
=76.3×10,
=763.
(231)7.05×23.7+7.05×76.3
=(23.7+76.3)×7.05,
=100×7.05,
=705
(232)[(7.6﹣5.2)÷0.4+2.54]×32,
=[2.4÷0.4+2.54]×32,
=[6+2.54]×32,
=8.54×32,
=273.28
(233)17.68÷5.2+2.7×1.5,
=3.4+4.05,
=7.45;
(234)35.6﹣5×1.73,
=35.6﹣8.65,
=26.95;
(235)(1.1﹣0.78)×(2.7﹣1.95),
=0.32×0.75,
=0.24
(236)1.3×0.75×4,
=1.3×3×0.25×4,
=1.3×3×(0.25×4),
=3.9×1,
=3.9;
(237)1.08÷1.8×1.2,
=0.6×1.2,
=0.72;
(238)50.4×1.9﹣1.8,
=95.76﹣1.8,
=93.96;
(239)0.82×0.25+1.18×0.25,
=(0.82+1.18)×0.25,
=2×0.25,
=0.5
(240)8.5×[(2.36+2.42)÷0.25],
=8.5×[4.78÷0.25],
=8.5×19.12,
=162.52;
(241)3.9÷[(1.3+0.6)×6﹣3.6],
=3.9÷[1.3×0.6+0.6×6﹣3.6],
=3.9÷[0.78+3.6﹣3.6],
=3.9÷0.78,
=5;
(242)4.25×6.3+3.7×4.25,
=4.25×(6.3+3.7),
=4.25×10,
=42.5;
(243)205×0.99,
=205×(1﹣0.01),
=205×1﹣205×0.01,
=205﹣2.05,
=202.95;
(244)25.6﹣7.49﹣2.51,
=25.6﹣(7.49+2.51),
=25.6﹣10,
=15.6;
(245)[2.5﹣(6.8﹣4.9)]×0.8,
=[2.5﹣1.9]×0.8,
=0.6×0.8,
=0.48
(246)102×4.5,
=(100+2)×4.5,
=100×4.5+2×4.5,
=450+9,
=459;
(247)3.4÷[(1.2+0.5)×5],
=3.4÷[1.7×5],
=3.4÷8.5,
=0.4;
(248)8×(20﹣1.25),
=8×20﹣8×1.25,
=160﹣10,
=150;
(249)0.654+10.9×6.5,
=0.654+70.85,
=71.504;
(250)22.7×1.25×0.8,
=22.7×(1.25×0.8),
=22.7×1,
=22.7;
(251)3.91×2.8+6.09×2.8,
=(3.91+6.09)×2.8,
=10×2.8,
=28
(252)6.23+3.09=9.32,
6.23
;
(253)132.4﹣59.8=72.6;
132.4
;
(254)6.62×0.84=5.5608;
6.62
;
(255)2.07÷0.023=90;
(256)[20.026﹣(8.6+9.7)×0.92]÷30.19,
=[20.026﹣18.3×0.92]÷30.19,
=[20.026﹣16.836]÷30.19,
=3.19÷30.19,
=.
(257)0.125×32×2.5,
=0.125×8×4×2.5,
=(0.125×8)×(4×2.5),
=1×10,
=10;
(258)0.8×6.3﹣0.8×3.8,
=(6.3﹣3.8)×0.8,
=2.5×0.8,
=2;
(259)50.4÷3.2×2.08,
=15.75×2.08,
=32.76;
(260)204÷(3.4×0.5),
=204÷1.7,
=120;
(261)(43.26+2.34)÷7.5,
=45.6÷7.5,
=6.08;
(262)(20﹣0.8×9)×5.7,
=(20﹣7.2)×5.7,
=12.8×5.7,
=72.96
(263)13.25﹣0.8+1.75﹣1.2,
=(13.25+1.75)﹣(1.2+0.8),
=15﹣2,
=13;
(264)2.5×99+2.5,
=2.5×(99+1),
=2.5×100,
=250;
(265)10.36+4.8﹣16.5÷5,
=10.36+4.8﹣3.3,
=15.16﹣3.3,
=11.86;
(266)12.5×2.4,
=12.5×(8×0.3),
=(12.5×8)×0.3,
=100×0.3,
=30
(267)38.78﹣19.59+41.22﹣30.41,
=38.78+41.22﹣19.59﹣30.41,
=(38.78+41.22)﹣(19.59+30.41),
=80﹣50,
=30;
(268)2.74×4.86+4.86×6.26+4.86,
=(2.74+6.26+1)×4.86,
=10×4.86,
=48.6;
(269)0.08×(12.5+2.5)×0.1,
=(0.08×12.5+0.08×2.5)×0.1,
=(1+0.2)×0.1,
=1.2×0.1,
=0.12;
(270)25.92+(10.1﹣14.5×0.2),
=25.92+(10.1﹣2.9),
=25.92+7.2,
=33.12;
(271)0.487×12.5÷48.7,
=0.487÷48.7×12.5,
=0.01×12.5,
=0.125;
(272)(8.16+2.09)÷[(10.3﹣9.3)÷0.4],
=10.25÷[1÷0.4],
=10.25÷2.5,
=4.1
(273)1.56×1.7+0.44×1.7,
=(1.56+0.44)×1.7,
=2×1.7,
=3.4;
(274)12.5×(7.2﹣1.9)×0.8,
=12.5×5.3×0.8,
=12.5×0.8×5.3,
=10×5.3,
=53;
(275)0.25×2010+20.10×75,
=0.25×2010+2010×0.75,
=2010×(0.25+0.75),
=2010×1,
=2010;
(276)30.8÷[(6.34﹣4.59)×4],
=30.8÷[1.75×4],
=30.8÷7,
=4.4.