分数加减法简便运算专项练习136题(有答案)
++﹣
﹣(﹣)
.
﹣(﹣)
+++
+﹣+
﹣(+)
﹣﹣
﹣+﹣.
.
999+99+9+.
++++++++
﹣+﹣
﹣(﹣1)
2﹣﹣.
﹣0.4+﹣.
.
+﹣
1﹣﹣
+++
+﹣
﹣(﹣)
++
3﹣
4﹣﹣
.
+(+)
﹣(+)
+++.
+++
+﹣
+﹣+
+(﹣)+
0.58++1.12+
11﹣﹣.
3.5﹣﹣.
+++﹣﹣.
﹣+﹣
﹣(+)
+++.
6﹣﹣
﹣+
﹣(﹣)
+﹣
+++
﹣+﹣
+++
8﹣﹣
+﹣+
﹣(+)
2﹣﹣
﹣+
+++
﹣(+)
1﹣﹣﹣﹣﹣
6﹣﹣
﹣+﹣
﹣(﹣)
﹣(+)
.
1﹣()﹣.
﹣(+)
++
﹣(﹣)
+﹣+.
.
.
﹣+
++
﹣+
+++
(79)+2++3,
(80)++,
(81)+++,
(82) ,
(83)﹣(+),
(84)
(85)
(86)﹣+,
(87),
(88)+﹣+,
(89),
(90)(2﹣1)﹣(1﹣2)
(90)(2﹣1)﹣(1﹣2),
(91)19.76﹣4﹣3,
(92)8﹣8+2,
(93)2.5×1.25×32,
(94)﹣+﹣,
(95)﹣(﹣),
(96)1﹣,
(97)+,
(98),
(99),
(100),
(101)16×(1000+),
(102)2﹣,
(103)11+13+15+17+19+21,
(104)
(105)
(106)51.27﹣8.66﹣1.34
(107)32.5÷(0.05×50)
(108)
(109).
(110)++﹣
(111)﹣(﹣)
(112)﹣(+)
(113),
(114)﹣(﹣),
(115)﹣(﹣),
(116)+++
(117)5+1+3+2+6+4+,
(118)﹣+﹣,
(119)()﹣(1.375﹣)
(120)+++
(121)+++++,
(122)++,
(123)+++,
(124)++++,
(125)﹣+,
(126)5﹣﹣1,
(127)+++,
(128),
(129)1﹣﹣,
(130),
(131)﹣+﹣,
(132)﹣(﹣)
(133)5﹣﹣﹣,
(134)﹣(10﹣6)÷8,
(135)++
(136)+﹣+
参考答案:
(1)++﹣,
=(+)+(﹣),
=1+0,
=1;
(2)﹣(﹣),
=﹣+,
=
(3),
=()+(+),
=7+9,
=16
(4)﹣(﹣),
=﹣,
=;
(5)+++,
=(+)+(+),
=1+1,
=2;
(6)+﹣+,
=(+)+(﹣),
=1+0,
=1
(7)﹣(+),
=﹣﹣,
=,
=;
(8)﹣﹣,
=﹣(+),
=﹣1,
=;
(9)﹣+﹣,
=(+)﹣(+),
=1﹣1,
=0.
(10)11﹣2+3﹣0.2,
=11+3﹣(0.2+2),
=15﹣(0.2+2.8),
=15﹣3,
=12
(11)999+99+9+,
=(999+99+9)+×3+,
=[(1000﹣1)+(100﹣1)+(10﹣1)]+(+),
=1110﹣3+3,
=1110
(12)++++++++,
=+++++(+)+(+)+(+)+(+),
=+++++(+)+(+)+(+)+(),
=×3+(+)+(×3)+(+2)+(),
=1+1+1+1+1,
=5;
(13)﹣+﹣,
=(+)﹣(+),
=﹣1,
=
(14)﹣(﹣1),
=﹣+1,
=+1,
=1;
(15)2﹣﹣,
=2﹣(+),
=2﹣1,
=1
9.﹣0.4+﹣,
=﹣+﹣,
=(+)﹣(+),
=1﹣1,
=0
(16),
=()+(),
=2+3,
=5.
(17)+++,
=(+)+(+),
=+1,
=1;
(18)4﹣﹣,
=4﹣(+),
=4﹣1,
=3;
(19)+(+),
=++,
=(+)+,
=1+,
=1.
(20)+﹣,
=+﹣,
=;
(21)1﹣﹣,
=1﹣(+),
=1﹣1,
=0;
(22)﹣,
=﹣,
=;
(23)+++,
=(+)+(+),
=1+1,
=2;
(24)4﹣2﹣1,
=4﹣2﹣1,
=﹣;
(25)7﹣(﹣),
=7﹣,
=6.
(26)+﹣,
=﹣,
=;
(27)﹣(﹣),
=﹣,
=;
(28)++,
=(+)+,
=1+,
=1;
(29)3﹣,
=3﹣﹣﹣,
=(3﹣)﹣(+),
=2﹣1,
=1;
(30),
=(+)+(+),
=1+1,
=2;
(31)4﹣﹣,
=3﹣,
=3﹣,
=2,
(32)1﹣+3﹣,
=1+3﹣(+),
=5﹣1,
=4
(33)+(+),
=++,
=1+,
=1;
(34)﹣(+),
=﹣﹣,
=﹣,
=;
(35)+++,
=++(+),
=1+1,
=2.
(36)+++,
=(+)+(+),
=1+1,
=2;
(37)+﹣,
=+(﹣),
=+,
=;
(38)+﹣+,
=(﹣)+(+),
=;
(39)+(﹣)+,
=+﹣+,
=(﹣)+(+),
=+1,
=1;
(40)0.58++1.12+,
=(0.58+1.12)+(+),
=1.7+1,
=2.7;
(41)11﹣﹣,
=11﹣(+),
=11﹣1,
=10.
(42),
=()﹣,
=1﹣,
=;
(43)3.5,
=3.5﹣(),
=3.5﹣1,
=2.5
(44)+++﹣﹣,
=(+)+(+)﹣(+),
=1+﹣,
=1﹣,
=1
(45)﹣+﹣,
=+﹣(+),
=1﹣1,
=0;
(46)﹣(+),
=﹣﹣,
=2﹣,
=1;
(47)+++,
=++(+),
=1+1,
=2.
(48)6﹣﹣,
=6﹣(+),
=6﹣1,
=5;
(49)﹣+,
=+﹣,
=1﹣,
=;
(50)﹣(﹣),
=﹣+,
=+﹣,
=1﹣,
=;
(51)+﹣,
=﹣+,
=1+,
=1;
(52)+++,
=(+)+(+),
=1+1,
=2;
(53)﹣+﹣,
=(+)﹣(+),
=1﹣1,
=0.
(54)+++
=()+(+),
=1+,
=1;
(55)8﹣
=8﹣(),
=8﹣,
=7;
(56)﹣
=()+(),
=0+1,
=1;
(57)()
=﹣,
=,
=0.
(58)2﹣﹣,
=2﹣(+ ),
=2﹣,
=;
(59)﹣+,
=﹣(),
=﹣,
=;
(60)+++,
=(+)+(),
=1,
=;
(61)﹣(+),
=,
=,
=.
(62)1﹣﹣﹣﹣﹣,
=﹣﹣﹣﹣,
=﹣﹣﹣,
=﹣﹣,
=﹣,
=;
(63)6﹣﹣,
=6﹣(+),
=6﹣1,
=5;
(64)﹣+﹣,
=(+)﹣(+),
=1﹣1,
=0;
(65)﹣(﹣),
=﹣+,
=+﹣,
=1﹣,
=;
(66)﹣(+),
=﹣﹣,
=﹣,
=.
(67),
=1﹣+1﹣+1﹣+1﹣+1﹣+1﹣,
=6﹣﹣﹣,
=6﹣,
=.
(68)1﹣()﹣,
=1﹣+﹣+﹣+﹣+,
=(1﹣)+(﹣)+(﹣)+(﹣)+,
=+0+0+0+,
=
(69)﹣(+)
=﹣,
=;
(70)++
=++,
=1+,
=1;
(71)﹣()
=﹣+,
=;
(72)+﹣+
=()+(+),
=0+1,
=1.
(73)+3++1,
=(+3)+(+1),
=3+2,
=5
(74),
=++++++++,
=﹣+﹣+﹣+﹣+﹣+﹣+﹣+﹣+﹣,
=﹣,
=.
(75),
=,
=1;
(76),
=,
=1+,
=1;
(77),
=,
=;
(78),
=,
=2+,
=2.
(79)+2++3,
=(+)+(2+3),
=1+6,
=7.
(80)++,
=++,
=1+,
=1;
(81)+++,
=(+)+(+),
=1+1,
=2
(82) ,
=(+)+(+),
=1+2,
=3;
(83)﹣(+),
=﹣﹣,
=﹣﹣,
=1﹣,
=.
(84)
=(2+7)+(7+2),
=10+10,
=20;
(85)
=(1+)+(2+)+(3+)+(4+)+(5+),
=(1+2+3+4+5)+(++++),
=15+(++++﹣),
=15+(1++),
=16+,
=16;
(86)﹣+,
=+﹣,
=1﹣,
=.
(87),
=(),
=1,
=1;
(88)+﹣+,
=()+(),
=0+1,
=1;
(89),
=()+(),
=1+1,
=2.
(90)(2﹣1)﹣(1﹣2)
(90)(2﹣1)﹣(1﹣2),
=2﹣1﹣1+2,
=(2+2)﹣(1+1),
=4﹣3,
=1;
(91)19.76﹣4﹣3,
=19.76﹣(4+3),
=19.76﹣8,
=11.76;
(92)8﹣8+2,
=8+﹣(8+)+(2+),
=8+﹣8﹣+2+,
=(8﹣8+2)+(﹣+),
=2+1,
=3;
(93)2.5×1.25×32,
=2.5×1.25×4×8,
=(2.5×4)×(1.25×8),
=10×10,
=100.
(94)﹣+﹣,
=(+)﹣(+),
=1﹣1,
=0;
(95)﹣(﹣),
=(+)﹣,
=1﹣,
=.
(96)1﹣,
=1﹣(+),
=1﹣1,
=0;
(97)+,
=(),
=1﹣,
=;
(98),
=()+(),
=1+,
=1.
(99),
=10﹣(5+4),
=10﹣9,
=(9﹣9)+(1﹣),
=;
(100),
=﹣+,
=0+,
=.
(101)16×(1000+),
=16000+16×,
=16000+1,
=16001;
(102)2﹣,
=2﹣()+(),
=2﹣1,
=,
=,
=
(103).11+13+15+17+19+21,
=(11+13+15+17+19+21)+(+++++),
=(11+21)×6÷2+(1﹣+﹣+﹣+﹣+﹣+),
=96+(1﹣),
=96+,
=96.
(104)
(105)
(106)51.27﹣8.66﹣1.34
(107)32.5÷(0.05×50)
(108)
(109).
(104)
=,
=1+,
=;
(105)
=,
=;
(106)51.27﹣8.66﹣1.34
=51.27﹣(8.66+1.34),
=51.27﹣10,
=41.27;
(107)32.5÷(0.05×50)
=32.5÷,
=,
=13;
(108)
=,
=,
=;
(109)
=,
=
(110)++﹣
(111)﹣(﹣)
(112)﹣(+)
(110)++﹣,
=(+)+(﹣),
=1﹣0,
=1;
(111)﹣(﹣),
=(+)﹣,
=1﹣,
=;
(112)﹣(+),
=﹣,
=﹣,
=
(113),
=()+(﹣)+(﹣)+…+(﹣),
=+﹣+﹣+…+﹣,
=﹣,
=.
(114)﹣(﹣),
=﹣(﹣),
=﹣,
=;
(115)﹣(﹣),
=﹣+,
=1;
(116)+++
=(+)+(+)
=1+
=1
(117)5+1+3+2+6+4+,
=(5+2+4)+(1+6)+(3+),
=12+8+4,
=24
(118)﹣+﹣,
=+﹣﹣,
=(+)﹣(+),
=1﹣1,
=0.
(119)()﹣(1.375﹣)
=﹣1.375+
=2++3﹣1.375
=3+1
=.
(120)+++
=+×+×+×,
=×(1+)+×(+),
=+×,
=×(1+),
=×,
=.
(121)+++++,
=+++++,
=1﹣+﹣+﹣+﹣+﹣+,
=1
(122)++,
=(1﹣)+(﹣)+(﹣),
=1﹣+﹣,
=1﹣,
=;
(123)+++,
=(1﹣)+(﹣)+(﹣)+(﹣),
=1+﹣+﹣+﹣,
=1﹣,
=,
(124)++++,
=(1﹣)+(﹣)+(﹣)+(﹣)+(﹣),
=1﹣+﹣+﹣+﹣+﹣,
=1﹣,
=
(125)﹣+,
=﹣+,
=;
(126)5﹣﹣1,
=5﹣(+1),
=5﹣2,
=3;
(127)+++,
=(+)+(+),
=1+1,
=2
(128),
=()+()+(﹣)+(﹣)+(﹣)+(﹣),
=(4﹣4)+(4﹣4)+(4﹣4)+(3﹣)+(4﹣4)+(12﹣12),
=﹣+﹣+﹣+﹣+﹣+﹣,
=++++﹣,
=+﹣+++,
=2+++,
=4;
(129)1﹣﹣,
=1﹣(﹣),
=1﹣,
=;
(130),
=﹣+,
=0+,
=
(131)﹣+﹣,
=(+)﹣(+),
=2﹣1,
=1;
(132)﹣(﹣)
=﹣
=;
(133)5﹣﹣﹣,
=5﹣(++),
=5﹣2,
=3;
(134)﹣(10﹣6)÷8,
=﹣4÷8,
=﹣,
=
(135)++
=++,
=1+,
=1;
(136)+﹣+
=++﹣,
=1﹣,
=1;