1.25除以0.25乘以4这题有简便算法吗

Question

1.25除以0.25乘以4这题有简便算法吗

Answer 1

1.25÷（0.25x4）=1.25

Answer 2

1.25÷0.25×4
=1.25×4÷0.25
=5×4
=20

Answer 3

原式等于
1.25÷0.25×4
=5×4
=20
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Answer 4

1.25*4/0.25
=1.25*4*4
=1.25*8*2
=10*2
=20