小升初脱式计算强化训练(专项突破)-小学数学六年级下册苏教版
展开小升初脱式计算强化训练(专项突破)-小学数学六年级下册苏教版
1.计算下面各题,能简算的要简算。
27.15﹣13.7﹣6.3 | 3.7×+6.3÷ |
2.5×32×1.25 | ×[﹣(﹣)] |
2.计算下面各题,能简算的要简算。
125×8÷125×8 | (1.6+1.6+1.6+1.6)×25 | |
3.6×18﹣0.8×36 | 0.375+ | 17×11×() |
3.用合理的方法计算。
714÷21+24×5 | 0.25×3.2×1.25 | (0.52×2.4)÷(0.8×2.6) |
÷7+× | 17×11×(+) | 解比例:=x:25 |
4.计算。
① | ②53.2×+46.8×0.3 |
③()×63 | ④[()÷] |
5.脱式计算,能简算的要简算。
5﹣﹣ | ×[﹣(﹣)] | 6×2.8+6.25×7.2 | 999×222+333×334 |
6.脱式计算。(能简算的要简算)
2000﹣450÷18×25 | ÷+× |
6.75+12%++0.38 | 2100+[56×(﹣)] |
7.能简算的要简算。
12.5%÷9+0.125× | 4﹣0.4﹣1.6+3 |
2021× | +÷25% |
8.脱式计算,能简算的要简算。
×9+ | ×÷× |
1﹣÷﹣ | ×[÷(+)] |
9.能简算的要简算.
2000﹣450÷18×25 | 68.87﹣(8.87+2.9) |
4×()×17 | 2018÷2018 |
10.脱式计算。(能简算的要简算)
() | 3.6﹣2×75% |
0.8×40×12.5×25 |
11.脱式计算(能简算的要简算)
(1)17.83﹣(6.29+8.83)﹣1.71 | (2)×2020 |
(3)0.625× | (4)3.8÷[()] |
12.计算下面各题,能简便的就简便算。
14÷+87×0.35﹣ | ÷(+) |
13×11××× | ()÷ |
13.计算,能简算的要简算。
8.8﹣6.75+9.2﹣0.25 | 1042﹣384÷16×13 |
2021×+2021×﹣2021 | 0.82×13.6﹣0.82×3.6 |
14.计算下面各题,能用简便运算的就用简便运算。
2.7×4.8+2.7×5.2 | 8×4×12.5×0.25 | ÷[×(+)] |
15.仔细算一算,怎样简便就怎样计算。
×﹣× | 12.5×24×3.02 | (﹣×)÷ |
16.用你喜欢的方法计算。
13.8﹣5.1﹣4.9 | 9.6×32+4.8×136 | ×12.5%××80 |
17.计算下面各题,能用简便运算的就用简便运算。
1.25×7.8×8 | 44×72+44×28 | ÷[×(+)] |
18.仔细算一算,怎样简便就怎样计算。
46.8×+53.2× | ×60× | 60÷[8×(54﹣45﹣3)] |
19.仔细算一算,怎样简便就怎样计算。
72×27+73×72 | ×55× | [0.51+(1.2﹣1.03)+2.4]×4.5 |
20.计算下面各题,能用简便运算的就用简便运算。
×101﹣ | 3.57×1.25×8 | ÷[﹣(1﹣)] |
小升初脱式计算强化训练(专项突破)-小学数学六年级下册苏教版
参考答案与试题解析
1.【解答】解;(1)27.15﹣13.7﹣6.3
=27.15﹣(13.7+6.3)
=27.15﹣20
=7.15
(2)3.7×+6.3÷
=×(3.7+6.3)
=×10
=
(3)2.5×32×1.25
=(2.5×4)×(8×1.25)
=10×10
=100
(4)×[﹣(﹣)]
=×[﹣]
=×
=
2.【解答】解:(1)﹣﹣
=﹣(+)
=﹣1
=
(2)125×8÷125×8
=125÷125×8×8
=125÷125×(8×8)
=1×64
=64
(3)(1.6+1.6+1.6+1.6)×25
=(1.6×4)×25
=1.6×(4×25)
=1.6×100
=160
(4)3.6×18﹣0.8×36
=3.6×18﹣8×3.6
=3.6×(18﹣8)
=3.6×10
=36
(5)0.375+
=0.375+++25%
=(0.375+)+(+25%)
=1+1
=2
(6)17×11×()
=17×11×﹣17×11×
=34﹣11
=23
3.【解答】解:(1)714÷21+24×5
=34+120
=154
(2)0.25×3.2×1.25
=0.25×(4×0.8)×1.25
=(0.25×4)×(0.8×1.25)
=1×1
=1
(3)(0.52×2.4)÷(0.8×2.6)
=0.52×2.4÷0.8÷2.6
=(0.52÷2.6)×(2.4÷0.8)
=0.2×3
=0.6
(4)÷7+×
=×+×
=(+)×
=1×
=
(5)17×11×(+)
=17×11×+17×11×
=33+34
=67
(6)=x:25
75x=1.2×25
75x÷75=1.2×25÷75
x=0.4
4.【解答】解:①
=
=
②53.2×+46.8×0.3
=53.2×0.3+46.8×0.3
=(53.2+46.8)×0.3
=100×0.3
=30
③()×63
=×63+×63
=49+12
=61
④[()÷]
=÷[]
=÷3
=
5.【解答】解:(1)5﹣﹣
=5﹣(+)
=5﹣1
=4
(2)×[﹣(﹣)]
=×[+﹣]
=×[﹣]
=×
=
(3)6×2.8+6.25×7.2
=6×(2.8+7.2)
=6×10
=62.5
(4)999×222+333×334
=333×(3×222)+333×334
=333×666+333×334
=333×(666+334)
=333×1000
=333000
6.【解答】解:(1)2000﹣450÷18×25
=2000﹣25×25
=2000﹣625
=1375
(2)÷+×
=×(+)
=×1
=
(3)6.75+12%++0.38
=(6.75+0.25)+(0.12+0.38)
=7+0.5
=7.5
(4)2100+[56×(﹣)]
=2100+[56×﹣56×]
=2100+[24﹣21]
=2100+3
=2103
7.【解答】解:(1)12.5%÷9+0.125×
=0.125×(+)
=0.125×1
=0.125
(2)4﹣0.4﹣1.6+3
=(4+3)﹣(0.4+1.6)
=8﹣2
=6
(3)2021×
=(2020+1)×
=2020×+
=2019+
=2019
(4)+÷25%
=+
=
8.【解答】解:(1)×9+
=×(9+1)
=×10
=1.6
(2)×÷×
=×××
=×××
=(×)×(×)
=×1
=
(3)1﹣÷﹣
=1﹣﹣
=1﹣(+)
=1﹣1
=0
(4)×[÷(+)]
=×[÷]
=×
=
9.【解答】解:(1)2000﹣450÷18×25
=2000﹣25×25
=2000﹣625
=1375
(2)68.87﹣(8.87+2.9)
=68.87﹣8.87﹣2.9
=60﹣2.9
=57.1
(3)4×(+)×17
=4××17+×17×4
=17+12
=29
(4)2018÷2018
=2018×
=2018×
=
10.【解答】解:(1)()
=(﹣)×24
=×24﹣×24
=34﹣16
=18
(2)3.6﹣2×75%
=3.6﹣1.5
=2.1
(3)
=0.75×+×0.75
=0.75×(+)
=0.75×1
=0.75
(4)0.8×40×12.5×25
=(0.8×12.5)×(40×25)
=10×1000
=10000
11.【解答】解:(1)17.83﹣(6.29+8.83)﹣1.71
=17.83﹣6.29﹣8.83﹣1.71
=(17.83﹣8.83)﹣(6.29+1.71)
=9﹣8
=1
(2)×2020
=×(2019+1)
=×2019+×1
=24+
=24
(3)0.625×
=0.625×+0.625×
=0.625×()
=0.625×1
=0.625
(4)3.8÷[()÷]
=3.8÷[]
=3.8÷3.8
=1
12.【解答】解:14÷+87×0.35﹣
=14×+87×﹣×1
=(14+87﹣1)×
=100×
=35
=
=
=
13×11×××
=13××(11×)×
=9×4×
=9×(4×)
=9×2
=18
()
=()×45
=
=21+25﹣30
=16
13.【解答】解:(1)8.8﹣6.75+9.2﹣0.25
=(8.8+9.2)﹣(6.75+0.25)
=18﹣7
=11
(2)1042﹣384÷16×13
=1042﹣24×13
=1042﹣312
=730
(3)2021×+2021×﹣2021
=2021×(+﹣1)
=2021×0
=0
(4)0.82×13.6﹣0.82×3.6
=0.82×(13.6﹣3.6)
=0.82×10
=8.2
14.【解答】解:(1)2.7×4.8+2.7×5.2
=2.7×(4.8+5.2)
=2.7×10
=27
(2)8×4×12.5×0.25
=(8×12.5)×(4×0.25)
=100×1
=100
(3)÷[×(+)]
=÷[×]
=÷
=6
15.【解答】解:(1)×﹣×
=×(﹣)
=×1
=
(2)12.5×24×3.02
=12.5×8×3×3.02
=(12.5×8)×(3×3.02)
=100×9.06
=906
(3)(﹣×)÷
=(﹣)÷
=÷
=
16.【解答】解:(1)13.8﹣5.1﹣4.9
=13.8﹣(5.1+4.9)
=13.8﹣10
=3.8
(2)9.6×32+4.8×136
=9.6×32+9.6×68
=9.6×(32+68)
=9.6×100
=960
(3)×12.5%××80
=(×)×(80×12.5%)
=3×10
=30
17.【解答】解:(1)1.25×7.8×8
=1.25×8×7.8
=10×7.8
=78
(2)44×72+44×28
=44×(72+28)
=44×100
=4400
(3)÷[×(+)]
=÷[×]
=÷
=6
18.【解答】解:(1)46.8×+53.2×
=(46.8+53.2)×
=100×
=750
(2)×60×
=××60
=×60
=24
(3)60÷[8×(54﹣45﹣3)]
=60÷[8×6]
=60÷48
=1.25
19.【解答】解:(1)72×27+73×72
=(27+73)×72
=100×72
=7200
(2)×55×
=××55
=×55
=33
(3)[0.51÷(1.2﹣1.03)+2.4]×4.5
=[0.51÷0.17+2.4]×4.5
=[3+2.4]×4.5
=5.4×4.5
=24.3
20.【解答】解:(1)×101﹣
=(×101﹣1)
=×100
=35
(2)3.57×1.25×8
=3.57×(1.25×8)
=3.57×10
=35.7
(3)÷[﹣(1﹣)]
=÷[﹣]
=÷
=
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