Question

44×3.33 22×3.34怎么简算

请问这2道题怎么简算？

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Answer 1

第一题: 44×3.33+22×3.34
=22×2×3.33+22×3.34
=22×(6.66+3.34)
=220
第二题: 6.66×111+222×6.67
=3.33×2×111+222×6.67
=3.33×222+222×6.67
=222×(3.33+6.67)
=2220
这两道题目都是小学四年级下册的数学题，有关于乘法分配率和结合率的脱式计算题。题目比较灵活，在做的时候要注意观察题目各项之间的关系，比如能否相加减得整十整百，再比如有无公因数可以提取等等，这是做这类题目的关键所在。

Answer 2

44x3.33+22x3.34
=22x2x3.33+22x3.34
=22x6.66+22x3.34
=22x(6.66+3.34)
=22x10
=220
6.66x111+222x6.67
=3.33x2x111+222x6.67
=3.33x222+222x6.67
=(3.33+6.67)x222
=10x222
=2220

Answer 3

44×3.33+22×3.34
=22×2×3.33+22×3.34
=22×(6.66+3.34)
=22×10
=220

追答