Question

1.25x(6.2-3.9)×0.8的简便方法怎么做

Answer 1

1.25×（6.2-3.9）×0.8
=1.25×2.3×0.8
=1.25×0.8×2.3
=1×2.3
=2.3

Answer 2

1.25x(6.2-3.9)×0.8
=(1.25x0.8)x(6.2-3.9)
=1x(6.2-3.9)
=2.3
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