10道简便运算并有答案
5个回答
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(1)2.64×1.7-2.64×0.7
=2.64×(1.7-0.7)
=2.64×1
=2.64
(2)31.5×1.07-3.15×0.7
=3.15×10.7-3.15×0.7
=3.15×(10.7-0.7)
=3.15×10
=31.5
(3)2.7×5.7-2.7+5.3×2.7
=2.7×(5.7-1+5.3)
=2.7×10
=27
(4)0.625÷0.125×0.8
=(0.625×0.8)×8÷(0.128×8)
=0.5×8÷1
=4
(5)18.6×6.1+3.9×18.6
=18.6×(6.1+3.9)
=18.6×10
=186
(6)1.3579+3.5791+5.7913+7.9135+9.1357
=(1+3+5+7+9)×1.1111
=25×1.1111
=27.7775
(7)52.5x2.9+5.45
=5.25x29+5.25+0.2
=5.25×(29+1)+0.2
=5.25×30+0.2
=157.5+0.3
=157.7
(8)0.92x15+0.08x15
=(0.92+0.08)×15
=1×15
=15
(9)0.72×1.25×2.5
=0.9×(0.8×1.25)×2.5
=0.9×1×2.5
=2.25
(10)400.6x7-2003x0.4
=200.3x14-200.3x4
=200.3×(14-4)
=200.3×10
=2003
=2.64×(1.7-0.7)
=2.64×1
=2.64
(2)31.5×1.07-3.15×0.7
=3.15×10.7-3.15×0.7
=3.15×(10.7-0.7)
=3.15×10
=31.5
(3)2.7×5.7-2.7+5.3×2.7
=2.7×(5.7-1+5.3)
=2.7×10
=27
(4)0.625÷0.125×0.8
=(0.625×0.8)×8÷(0.128×8)
=0.5×8÷1
=4
(5)18.6×6.1+3.9×18.6
=18.6×(6.1+3.9)
=18.6×10
=186
(6)1.3579+3.5791+5.7913+7.9135+9.1357
=(1+3+5+7+9)×1.1111
=25×1.1111
=27.7775
(7)52.5x2.9+5.45
=5.25x29+5.25+0.2
=5.25×(29+1)+0.2
=5.25×30+0.2
=157.5+0.3
=157.7
(8)0.92x15+0.08x15
=(0.92+0.08)×15
=1×15
=15
(9)0.72×1.25×2.5
=0.9×(0.8×1.25)×2.5
=0.9×1×2.5
=2.25
(10)400.6x7-2003x0.4
=200.3x14-200.3x4
=200.3×(14-4)
=200.3×10
=2003
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(1)25×32×125
=(25×4)×(125×8)
=100×1000
=100000
(2)125×4×8
=(125×8)×4
=1000×4
=4000
(3)25×5×4
=(25×4)×5
=100×5
=500
(4)6.5×3.2+6.5×6.8
=6.5×(3.2+6.8)
=6.5×10
=65
(5)3.6+5.7+6.4+4.3
=(3.6+6.4)+(5.7+4.3)
=10+10
=20
(6)5.15-3-2.15
=(5.15-2.15)-3
=3-3
=0
(7)6.24÷(3.12×2)
=6.24÷6.24
=1
(8)5.8-1.4-2.6
=5.8-(1.4+2.6)
=5.8-4
=1.8
(9)7300÷0.25×4
=7300÷(0.25×4)
=7300÷1
=7300
(10)7.7×99+7.7
=7.7×(99+1)
=7.7×100
=770
=(25×4)×(125×8)
=100×1000
=100000
(2)125×4×8
=(125×8)×4
=1000×4
=4000
(3)25×5×4
=(25×4)×5
=100×5
=500
(4)6.5×3.2+6.5×6.8
=6.5×(3.2+6.8)
=6.5×10
=65
(5)3.6+5.7+6.4+4.3
=(3.6+6.4)+(5.7+4.3)
=10+10
=20
(6)5.15-3-2.15
=(5.15-2.15)-3
=3-3
=0
(7)6.24÷(3.12×2)
=6.24÷6.24
=1
(8)5.8-1.4-2.6
=5.8-(1.4+2.6)
=5.8-4
=1.8
(9)7300÷0.25×4
=7300÷(0.25×4)
=7300÷1
=7300
(10)7.7×99+7.7
=7.7×(99+1)
=7.7×100
=770
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(1)2.64×1.7-2.64×0.7
=2.64×(1.7-0.7)
=2.64×1
=2.64
(2)31.5×1.07-3.15×0.7
=3.15×10.7-3.15×0.7
=3.15×(10.7-0.7)
=3.15×10
=31.5
(3)2.7×5.7-2.7+5.3×2.7
=2.7×(5.7-1+5.3)
=2.7×10
=27
(4)0.625÷0.125×0.8
=(0.625×0.8)×8÷(0.128×8)
=0.5×8÷1
=4
(5)18.6×6.1+3.9×18.6
=18.6×(6.1+3.9)
=18.6×10
=186
(6)1.3579+3.5791+5.7913+7.9135+9.1357
=(1+3+5+7+9)×1.1111
=25×1.1111
=27.7775
(7)52.5x2.9+5.45
=5.25x29+5.25+0.2
=5.25×(29+1)+0.2
=5.25×30+0.2
=157.5+0.3
=157.7
(8)0.92x15+0.08x15
=(0.92+0.08)×15
=1×15
=15
(9)0.72×1.25×2.5
=0.9×(0.8×1.25)×2.5
=0.9×1×2.5
=2.25
(10)400.6x7-2003x0.4
=200.3x14-200.3x4
=200.3×(14-4)
=200.3×10
=2003
4216
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=2.64×(1.7-0.7)
=2.64×1
=2.64
(2)31.5×1.07-3.15×0.7
=3.15×10.7-3.15×0.7
=3.15×(10.7-0.7)
=3.15×10
=31.5
(3)2.7×5.7-2.7+5.3×2.7
=2.7×(5.7-1+5.3)
=2.7×10
=27
(4)0.625÷0.125×0.8
=(0.625×0.8)×8÷(0.128×8)
=0.5×8÷1
=4
(5)18.6×6.1+3.9×18.6
=18.6×(6.1+3.9)
=18.6×10
=186
(6)1.3579+3.5791+5.7913+7.9135+9.1357
=(1+3+5+7+9)×1.1111
=25×1.1111
=27.7775
(7)52.5x2.9+5.45
=5.25x29+5.25+0.2
=5.25×(29+1)+0.2
=5.25×30+0.2
=157.5+0.3
=157.7
(8)0.92x15+0.08x15
=(0.92+0.08)×15
=1×15
=15
(9)0.72×1.25×2.5
=0.9×(0.8×1.25)×2.5
=0.9×1×2.5
=2.25
(10)400.6x7-2003x0.4
=200.3x14-200.3x4
=200.3×(14-4)
=200.3×10
=2003
4216
数学题,好老师1对1教出好成绩.0元试听
关注计算题的都在看
数学题,掌门1对1拥有10000+教研人员,1对1针对性教学,查缺补漏,快速提升!数学题,初高中在线1对1辅导,好老师1对1辅导教出好成绩。
上海掌小门教育科技..广告
数学六年级下册课程【0元上课】让孩子轻松写出高分作文
关注计算题的都在看
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