运用乘法运算定律计算,使以下计算简便
3个回答
2019-04-17 · 知道合伙人教育行家
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4x36x125
=4x125x36
=500x36
=18000
25x9x4x10
=(25x4)x(9x10)
=100x90
=9000
=4x125x36
=500x36
=18000
25x9x4x10
=(25x4)x(9x10)
=100x90
=9000
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展开全部
4x36x125
=4x125x36
=500x4x9
=2000x9
=18000
25x9x4x10
=(25x4)x(9x10)
=100x90
=9000
25x(8+4)
=25x12
=25x4x3
=100x3
=300
=4x125x36
=500x4x9
=2000x9
=18000
25x9x4x10
=(25x4)x(9x10)
=100x90
=9000
25x(8+4)
=25x12
=25x4x3
=100x3
=300
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