小学数学简便运算专项练习400题
第一部分(1-50题)
12.06+5.07+2.94 30.34+9.76-10.34
×3÷×3 25×7×4
34÷4÷1.7 1.25÷×0.8
102×7.3÷5.1 17+-7
1-- 11+7+3
933-15.7-4.3 41.06-19.72-20.28
7-3+ 8+2-
700÷14÷5 18.6÷2.5÷0.4
1.96÷0.5÷4 1.06×2.5×4
13×÷ 29÷×
19.68-(2.68+2.97) 5.68+(5.39+4.32)
19.68-(2.97+9.68) 7+(-)
5-(-) 0.74÷(71×)
1.25×( 8 ÷0.5) 0.25×( 4 × 1.2)
1.25×( 213×0.8) 9.3÷(4÷)
24×(--+) (12+) ×7
0.92×1.41+0.92×8.59 ×-×
1.3×11.6-1.6×1.3 ×11.6+18.4×
9999+999+99+9 4821-998
3.2×12.5×25 1.25×88
7.6÷0.25 3.5÷0.125
1.8×99+1.8 3.8×9.9+0.38
×103-×2- 1.01×9.6
102×0.87 2.6×9.9
×31+ ×+÷
第二部分(51-100题)
×36 ×38
13.5×27+13.5×72+13.5 1.5×7.4+0.6×150%+2÷
5.3×+2.7×25% 0.67×10.1-6.7
28×21.6-2.8×16 5.6×1.7+0.56×83
×6.6+2.5× --
4.6+++5.4 ×(-÷)
2.8++7.2+ +2.25++
++ -+
+-++ 0.75+++0.375
++++ -(+)
5-- 48.3--
×4.25+÷6 3.6×0.25
0.625×0.5++×62.5% ×÷
2.5×(+++) 22×+25×75%-7×0.75
0.25×63.5-× ×2.5-×
+3.125++ +(-1.8)
(111+999) ÷[56×(-)] 49.5×-(50-)×0.6
×+÷+ 45×(+-0.6)
897×-37.5%+104×0.375 ×(-5.375)
3.5×+1.25×+3.8÷ 71×99
3755+2996 8439+1001
446+295 888+999
299×101 563×999
2100÷20 1125-996
6÷0.25 72×156-56×72
第三部分(101-150题)
25×32×125 709×99+709
0.25×48 2.5×-0.4÷2
2×6.6+2.5×6 75.3×99+75.3
4.6×3.7+54×0.37 0.125×+×8.25+12.5%
11―6―1 15―4.25―5
19.82―6.57―3.43 4.6+3+6+5.4
4+2.25+5+7 9.63÷2.5÷4
8.37-3.25-(1.37+1.75)
3-- ×+×
×+÷ 18×(+)
×7+×5 (-)×(24-)
(×+)÷ ÷[(+)×]
×7+×5 (-)×24-)
()
(32×+17)÷ (25+)÷+
×+×+ ×÷
(21×+×21)× (99+)÷9
×× +3÷
÷[(+)×] (+)×30
×-÷ 4--
×58+×41+ ÷[(-)÷]
××- ×+÷
235 - 135÷18 ×153–0.6×53
第四部分(151-200题)
(+)÷+ 10 - - +
25×÷× 13.09-8.12-4.88
12×103-4500÷75 ×[÷(×)]
(+)×15×11 37.5+19.5÷2.5×4
1125-997 998+1246
4+3.2+5+6.8 25×(37×8)
12-(1+2) 400÷125÷8
(-)×12 1×2×
34×(2+) 125×8.8
4.35+4.25+3.65+3.75 3.4×99+3.4
17.15-8.47-1.53 17-3-4
0.125×0.25×32 22.3-2.45-5.3-4.55
(++)×72 4.25-3-(2-1)
187.7×11-187.7 ÷2+×
43×+57.125×-0.5 ×(-÷)
2.42÷+4.58×-4÷3 ×6.6-2.5×
++ -(-)
4.6--+5.4 2.8++7.2+
-2.25+- ++14
-+ 5--
+-++ 0.75+++0.375
-+-+ 48.3--
×4.25+÷6 +(-1.8)
0.625×0.5++×62.5% ×8
2.5×(+- - ) 22×+25×75%+5×0.75
第五部分(201-250题)
3.2×0.25﹣÷4 0.4×(3.85﹣0.4)÷13.8
15.8﹣+14.2﹣ 8×( +)+ ;
÷( +×) 68÷[0.5×(7.5﹣0.7)
25×1.25×4 (3.75+4.1+2.35)×0.8
1﹣﹣ 99×16+16
10÷+×18 26.35÷6.2+14.5
31.9×18﹣8×31.9 21÷(+)÷
(+)×45 (1﹣×70)÷
12×(+﹣) (﹣0.125)÷0.5
﹣15.37+﹣34.63 24×(+﹣)
360÷[56×(﹣)] (×1.7+×1.7)÷
80.7×8.7+8.07×13 ×[﹣(﹣)]
96×
10.64+4.5×3.6+11.36 7×(++)
×+÷ 2+÷×
×(+÷) ÷[(+)×]
7.32﹣(3.8+1.32) 0.6×24+×76
×÷() [7+(3﹣1)]×+
1880×201.1﹣187.9×2011
3.2×1.25×0.25 5.8×[1÷(2.1﹣2.09)]
×101﹣ 42÷(+)
×+×75% (﹣)×(+)
第六部分(251-300题)
8.85﹣0.25﹣0.75 (51+)÷17
375+450÷18×25 1.25×0.25×32
14.2×25%+× ÷(1﹣﹣)
+2+3.25+3 (+)×15×17
68﹣7.5+32﹣2.5 ﹣(﹣)
175+25﹣112 8.02×99+8.92
×+×+ (+)×7×5
×(0.75﹣) +×(2.5﹣)
0.45+0.45÷0.9×1.8 9﹣5﹣2.25
25×104 0.625×4.3+×4.7+62.5%
(+)×10×6 ×20﹣×3﹣
2005× 999+99+9+
÷[﹣(+)] 1.3﹣3.79+9.7﹣6.21
(×+×)×18.5 ×8++4×
2.8×4.1+0.28×59 26.7﹣1.7×5﹣1.5
8×+8× 69×
1200﹣198 ÷+×
×(1÷﹣÷1)+. 67×
1.9﹣1.9×(1.9﹣1.9) 0.7+3.9+4.3+6.1
12.25﹣0.64﹣0.36+7.75 3﹣÷﹣
×〔﹣(﹣)〕 (+)×7+ .
÷(﹣)×(﹣) +﹣+
6×0.375+0.375×3+0.375 4.67﹣(2.98+0.67)
3÷÷÷4 76×99
36×(+﹣) (+÷)×
第七部分:(第301-350题)
4.05﹣1.8﹣1.2 125×32×25
(+)÷﹣ 1.25×32×2.5
+× 7.38﹣(1.57+2.38)
+×99 ÷[1÷(﹣)]
9315÷23+77 1.25×32×2.5
7.25﹣3+3.75﹣6 0.625×12.2﹣×3.2+
(×+÷)÷ 184×0.25+×15+25%
187﹣(15﹣12) 18+6.25+7+3.75
÷8+× 6.43×83.8÷6.43×6.43÷83.8÷6.43
125×8.08 86×15﹣380
79×25+20×79+79×55 [﹣(﹣)]÷4
×(﹣) ×÷
7+3+2+6 ÷7+×
2.5×0.125×80×4 . 167+289+33+11
48×125×2×8 23×52+52×77 ;
89×101 3﹣2+5﹣1
14.85﹣1.58×8+31.2÷1.2 2.25×+2.75÷1+60%
1000+999﹣998﹣997+996+995﹣994﹣993+…+104+103﹣102﹣101,
1.25×0.25×32 0.25×3.78×4
6.74×10.1 0.85×99
6.8×3.7+6.8×6.3 13.6﹣2.8+7.4﹣7.2
98×2.5 ÷23+×
3.5÷8÷0.125 . ÷13+×
54.2﹣+4.8﹣; 3.5×+5.5×80%+0.8
第八部分(351-430题)
12×3434-34×1212 20182018×1998-19981998×2018
+++++++
答案:
第一部分(1-50题)
12.06+5.07+2.94=20.07 30.34+9.76-10.34 =29.76
×3÷×3 =9 25×7×4 =700
34÷4÷1.7 = 5 1.25÷×0.8 =
102×7.3÷5.1 = 146 17+-7 =10
1-- = 11+7+3 =22
933-15.7-4.3 =913 41.06-19.72-20.28=1.06
7-3+=4 8+2-=10
700÷14÷5=10 18.6÷2.5÷0.4=18.6
1.96÷0.5÷4 =0.98 1.06×2.5×4=10.6
13×÷ =13 29÷×=29
19.68-(2.68+2.97)=14.03 5.68+(5.39+4.32)=15.39
19.68-(2.97+9.68)=7.03 7+(-)=7
5-(-) =5 0.74÷(71×)=
1.25×( 8 ÷0.5)=20 0.25×( 4 × 1.2)=1.2
1.25×( 213×0.8)=213 9.3÷(4÷)=40
24×(--+)=17 (12+) ×7=86
0.92×1.41+0.92×8.59=9.2 ×-×=
1.3×11.6-1.6×1.3=13 ×11.6+18.4×=54
9999+999+99+9=11106 4821-998=3823
3.2×12.5×25=1000 1.25×88=110
7.6÷0.25=30.4 3.5÷0.125=28
1.8×99+1.8 =180 3.8×9.9+0.38 =38
×103-×2-=28 1.01×9.6=90696
102×0.87=88.74 2.6×9.9=25.74
×31+=7 ×+÷
第二部分(51-100题)
×36= ×(37-1)=32 ×38=×(37+1)=33
13.5×27+13.5×72+13.5=1350 1.5×7.4+0.6×150%+2÷=
5.3×+2.7×25% =2.5 0.67×10.1-6.7=0.067
28×21.6-2.8×16=560 5.6×1.7+0.56×83=56
×6.6+2.5×=33 --=3
4.6+++5.4 =20 ×(-÷)=
2.8++7.2+=19 +2.25++=20
++=1 -+=53
+-++=5 0.75+++0.375=2
++++=1-+10-+100- +1000- +10000- = 11110
-(+)=1
5--=1 48.3--=28.3
×4.25+÷6 =42.5 3.6×0.25 =0.9
0.625×0.5++×62.5% =1.25 ×÷=
2.5×(+++)=9 22×+25×75%-7×0.75=30
0.25×63.5-×=12.5 ×2.5-×=5
+3.125++=10 +(-1.8)=17
(111+999) ÷[56×(-)]=370 49.5×-(50-)×0.6 =495
×+÷+=7 45×(+-0.6)=20
897×-37.5%+104×0.375=875 ×(-5.375) =0
3.5×+1.25×+3.8÷=12.5 71×99=7029
3755+2996=6751 8439+1001=9440
446+295=741 888+999=1887
299×101=30199 563×999=562437
2100÷20 =105 1125-996=129
6÷0.25=6×4=24 72×156-56×72=7200
第三部分(101-150题)
25×32×125=25×4×8×125=100000 709×99+709=70900
0.25×48=0.25×4×12=12 2.5×-0.4÷2=0.9
2×6.6+2.5×6 =33 75.3×99+75.3=7530
4.6×3.7+54×0.37 =37 0.125×+×8.25+12.5%=1.25
11―6―1 =3 15―4.25―5= 5
19.82―6.57―3.43 =9.82 4.6+3+6+5.4=20
4+2.25+5+7=20 9.63÷2.5÷4=9.63÷(2.5×4)=0.963
8.37-3.25-(1.37+1.75)=2 =
3--=2 ×+×=
×+÷= 18×(+)=23
×7+×5 =8 (-)×(24-)=1
(×+)÷= ÷[(+)×]=1
() = =
(32×+17)÷ =60 (25+)÷+=103
×+×+ = ×÷=
=20 =0
(21×+×21)× = (99+)÷9 =11
×× = +3÷=6
÷[(+)×] = (+)×30 =49
×-÷ = 4-- =2
×58+×41+=12.5 ÷[(-)÷]=4
××- = ×+÷=
235 - 135÷18 =227.5 ×153 – 0.6×53=60
第四部分(151-200题)
(+)÷+= 10 - - + =9
25×÷×=1 13.09-8.12-4.88=0.09
12×103-4500÷75 =96 ×[÷(×)]
(+)×15×11=×15×11+ ×15×11 =67
37.5+19.5÷2.5×4==68.7
1125-997 =128 998+1246 =2224
4+3.2+5+6.8=20 25×(37×8)=7400
12-(1+2)=8 400÷125÷8=0.4
(-)×12 =1 1×2×=
34×(2+)=81 125×8.8 =12.5×(8+0.8)=1100
4.35+4.25+3.65+3.75=16 3.4×99+3.4=340
17.15-8.47-1.53 =7.15 17-3-4=9
0.125×0.25×32=1 22.3-2.45-5.3-4.55=10
(++)×72=109 4.25-3-(2-1)=0
187.7×11-187.7=1877 ÷2+× =
43×+57.125×-0.5=50 ×(-÷)=
2.42÷+4.58×-4÷3=8 ×6.6-2.5×=0
++=19 -(-)=2
4.6--+5.4=0 2.8++7.2+=19
-2.25+-=0 ++14 =14
-+=53 5--=1
+-++=5 0.75+++0.375=2
-+-+= 9090 48.3--=28.3
×4.25+÷6= 42.5 +(-1.8)=17
0.625×0.5++×62.5% =1.25 ×8= (31+)×8=251
2.5×(+--)=0 22×+25×75%+5×0.75=39
第五部分(201-250题)
3.2×0.25﹣÷4= 0.4×(3.85﹣0.4)÷13.8=0.1;
15.8﹣+14.2﹣=29 8×( +)+=4;
÷( +×)=; 68÷[0.5×(7.5﹣0.7)]=20.
25×1.25×4 =125 (3.75+4.1+2.35)×0.8=8.08
1﹣﹣ =0 99×16+16=1600
10÷+×18=30 26.35÷6.2+14.5=18.75
31.9×18﹣8×31.9=319; 21÷(+)÷=35;
(+)×45=36; (1﹣×70)÷=;
12×(+﹣)=1; (﹣0.125)÷0.5=0.5.
﹣15.37+﹣34.63=50; 24×(+﹣)=11;
360÷[56×(﹣)]=120; (×1.7+×1.7)÷=;
80.7×8.7+8.07×13=807; ×[﹣(﹣)]=.
96×=; =;
=; =;
=8; =6.
10.64+4.5×3.6+11.36=38.2; 7×(++)=;
×+÷=; 2+÷×=;
×(+÷)=; ÷[(+)×]=.
7.32﹣(3.8+1.32)=2.2; 0.6×24+×76=60;
×÷()=; [7+(3﹣1)]×+=7
1880×201.1﹣187.9×2011=201.1 =25;
=; =648.
3.2×1.25×0.25=1; 5.8×[1÷(2.1﹣2.09)]=580;
×101﹣=62; 42÷(+)=36;
×+×75%=0.75; (﹣)×(+)=.
第六部分(251-300题)
8.85﹣0.25﹣0.75=7.85; (51+)÷17=3;
375+450÷18×25=1000; 1.25×0.25×32=10;
14.2×25%+×=3.75; ÷(1﹣﹣)=1.
+2+3.25+3=10; (+)×15×17=47;
68﹣7.5+32﹣2.5=90; ﹣(﹣)=.
175+25﹣112=88; 8.02×99+8.92=802.9;
×+×+=1; (+)×7×5=17;
×(0.75﹣)=; +×(2.5﹣)=.
0.45+0.45÷0.9×1.8=1.35; 9﹣5﹣2.25=1;
25×104=2600; 0.625×4.3+×4.7+62.5%=6.25;
(+)×10×6=16; ×20﹣×3﹣=6.
2005×=(2004+1)×=2004×+=2003+=2003;
999+99+9+=999+99+9=(999)+(99)+(9)=1000+100+10=1110;
÷[﹣(+)]=; 1.3﹣3.79+9.7﹣6.21=1.
(×+×)×18.5=16; ×8++4×=7;
2.8×4.1+0.28×59=28; 26.7﹣1.7×5﹣1.5=16.7.
8×+8×=8; 69×=15;
1200﹣198=1002; ÷+×=;
×(1÷﹣÷1)+=. 67×=(66+1)×=24;
1.9﹣1.9×(1.9﹣1.9)=1.9 0.7+3.9+4.3+6.1=15;
12.25﹣0.64﹣0.36+7.75=19 3﹣÷﹣=2;
×〔﹣(﹣)〕=; (+)×7+=5.
÷(﹣)×(﹣)=; +﹣+=1;
6×0.375+0.375×3+0.375=3.75; 4.67﹣(2.98+0.67)=1.02;
3÷÷÷4=3. 76×99=7524;
36×(+﹣)=11; (+÷)×=;
第七部分(301-350题)
4.05﹣1.8﹣1.2=1.05; 125×32×25=100000;
(+)÷﹣=0. 1.25×32×2.5=100,
+×=; 7.38﹣(1.57+2.38)=3.43;
+×99=90; ÷[1÷(﹣)]=;
9315÷23+77=482. 1.25×32×2.5=100;
7.25﹣3+3.75﹣6=1; 0.625×12.2﹣×3.2+=6.25.
(×+÷)÷=; 184×0.25+×15+25%=50;
187﹣(15﹣12)=185; 18+6.25+7+3.75=36;
÷8+×=; 6.43×83.8÷6.43×6.43÷83.8÷6.43=1.
125×8.08=1010, 86×15﹣380=910,
79×25+20×79+79×55=7900, [﹣(﹣)]÷4=.
×(﹣)=, ×÷=,
7+3+2+6,=20; ÷7+×=;
2.5×0.125×80×4=100. 167+289+33+11=500;
48×125×2×8=96000; 23×52+52×77=5200;
89×101=8989. 3﹣2+5﹣1=5;
14.85﹣1.58×8+31.2÷1.2=28.21; 2.25×+2.75÷1+60%=3.6;
1000+999﹣998﹣997+996+995﹣994﹣993+…+104+103﹣102﹣101,
=(1000+999﹣998﹣997)+(996+995﹣994﹣993)+…+(104+103﹣102﹣101),
=4+4+…+4,
=4×(900÷4),
=900.
1.25×0.25×32=10; 0.25×3.78×4=3.78;
6.74×10.1=68.074; 0.85×99=84.15;
6.8×3.7+6.8×6.3=68. 13.6﹣2.8+7.4﹣7.2=11;
98×2.5=245; ÷23+×=
3.5÷8÷0.125=3.5. ÷13+×=;
54.2﹣+4.8﹣=57; 3.5×+5.5×80%+0.8=8;
第八部分(351-430题)
12×3434-34×1212 =12×34×101-34×12×101=0
20182018×1998-19981998×2018 =2018×1001×1998-1998×1001×2008=0
= 1÷(123 ÷123)=1÷【(123+)÷123】=
=1÷【(1573+)÷1573】+=1
=159×-(104+1)×= =169×+(2003+1)×= =2145
=×(-+ -+……+-)=
=-+-++…+-=
=1-(+)+(+)-(+)+(+)-(+)+(+)-(+)+(+)=1-+=
=(+)×()+(+)×-(+)×()
=(+)×=
=()×1+()×()-1×()-()×()
=
=(1-…-)×(++…+)+(1-…-)×-(1-…-)×(++…+)+×(++…+)
=(1-…-)×+×(++…+)
= 1×-(++…+)×+×(++…+)=
= 110
=7.6 ×2011.4+2011.4×2.4+12.5×2.4=20145.25
=999×999+999+1000=999000+1000=1000000
==2×33×3×222+2×3333×3×22222 =444×999+44444×9999=444×(1000-1)+44444×(10000-1)=444000-444+444440000-44444 =444884000-44888=444439512
= 8×1111+9×8×1111=8×1111×(1+9)=88880
= +=1+=
= =(100-)×49=4899
= 16 =16 =10 =100
= 20196477
= ×+ × =
= 625 =0.75
=39×+86×+24×=148 =(50+)×+(70+)×+(90+)×=123
=1÷【(2011+)÷2011 】= = 5392
=7.5
=0.5
=62.5-(2.1-1.2)=61.6
=94×100.35+6 ×100.35=10035
=7.15×2.5×18-7.15×2.5×0.5×28
=7.15×2.5×(18-14)=71.5
= 12
=2014 =24×=8
= =+1=1
=1.56×9.2+9.2×0.44=18.4
=
=×(79+10+)= 50 =76×-76×+23×+23×-53×+53×=×(76-53)-×(76-23)+×(23+53)=1
= 20×+20×=40
=×(+)-××=-=
=100
=(+)÷=
= 33.3
= =
=+…+-=
= 1-+1-+1-+1-+…+1-=109-(+++…+)
=109-(+-+-+…+-)=109-=108
=×(1-+ -+ -+…+-)=
=0
=2008×98.25-225×10.04+200.8×28.75=2008×98.25-×2008 +2008×2.875=200800
=÷()=1÷0.8=1.25
= 1×(++…+)+(++…+)×(++…+)-1×(++…+)-(++…+)×(++…+)=
=2.5 ==
=59 =
= =4019
=1 =2007
=9 =100
= (++)×7×8×9=24
=(46+43+41+…+1)-××16=375
=(++)×(+)+(++)×-(++)×(+)-×(+)=
=(1-+-+-+…+-)=
=(1+3+5…+17)+(++…+)
=81
=10120.36 +++++++ =+++++()+()+()+()=5
=+ -+-+-+…+=
=(2009+2008)×(2009-2008)=4017
=3333×6666+3333×3334=33330000
=(500+2)(500-2)=500²-2²=249996
=(900+1)(900-1)=900²-1²=809999
=(2000+1)(2000-1)=2000²-1²=3999999
= (2011+2009)(2011-2009)=4020×2=8040 =(1250+750)(1250-750)=2000×500=1000000