问题标题:
【56×1.25=?3.4×7×1.5=?0.8×0.25×0.4×12.5=?递等式计算、要简便哦!有奖金!】
更新时间:2024-04-23 20:17:00
问题描述:
56×1.25=?3.4×7×1.5=?0.8×0.25×0.4×12.5=?递等式计算、要简便哦!有奖金!
申立群回答:
56×1.25
=7x8x1.25
=7x10
=70
3.4×7×1.5
=1.7x7x1.5x2
=11.9x3
=35.7
0.8×0.25×0.4×12.5
=(0.8×12.5)×(0.4×0.25)
=10x0.1
=1
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