77×0.16÷7.7×12.5 怎么简便运算?
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77×0.16÷7.7×12.5怎么简便运算?77×0.16÷7.7×12.5怎么简便运算?77×0.16÷7.7×12.5怎么简便运算?77×0.16÷7.7×12.5=77÷7.7×0.16×12
77×0.16÷7.7×12.5 怎么简便运算?
77×0.16÷7.7×12.5 怎么简便运算?
77×0.16÷7.7×12.5 怎么简便运算?
77×0.16÷7.7×12.5
=77÷7.7×0.16×12.5
=10×0.2×0.8×12.5
=2×10=20
将77与7.7进行运算为10
将0.16分解成0.4*0.4
0.4与12.5运算为5，同0.4乘为2
在乘10 结果为20
77×0.16÷7.7×12.5
=77÷7.7×0.16×12.5
=10×0.2×0.8×12.5
=5×10
=50
77×0.16÷7.7×12.5
=77÷7.7×0.16×12.5
=10×0.4×0.4×12.5
=4×5
=20
77×0.16÷7.7×12.5 怎么简便运算?
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