Question

0.02×1.25×5×0.24，简便？

Answer 1

0.02×1.25×5×0.24
＝（0.02×5）×0.25×5×0.4×0.6
＝0.1×（0.25×0.4）×（5×0.6）
＝0.1×0.1×3
＝0.03

Answer 2

=(0.02×5）×(1.25×8×0.03)
=0.1×(10×0.3)
=0.1×3
=0.3
解法分析：凑千，凑百，利用交换律，结合律，按照四则运算法则进行运算，同级运算按顺序计算，不同级运算先算高级，有括号先算括号里面的，然后就可以很快得出结果。

Answer 3

=0.02x5x(1.25x0.24)
=0.1x1.25x0.24
=0.1x0.25x5x4x0.06
=0.1x(0.25x4)x5x0.06
=0.1x1x0.3
=0.03

Answer 4

0.02×1.25×5×0.24
＝0.02×5×1.25×0.03×8
＝0.1×0.03×(1.25×8)
＝0.003×10
＝0.03

Answer 5

0.02*1.25*5*0.24=0.02*5*1.25*0.8*0.3=（0.02*5）*（1.25*0.8）*0.3=0.1*1*0.3=0.03