Question

0.25×(4+8)X12.5简算运算？

这道题用简便计算怎么写？

Answer 1

0.25×(4+8)X12.5简算运算：
0.25×(4+8)×12.5
=(0.25×4+0.25×8)×12.5
=(1+2)×12.5
=3×12.5
=37.5

Answer 2

0.25×(4+8)×12.5的简便运算是：
=0.25×12×12.5
=【0.25×(10+2)】×12.5
=【0.25×10+0.5】×12.5
=(2.5+0.5)×12.5
=3×12.5
=37.5

Answer 3

这题用乘法分配律进行运算，得到（0.25×4+0.25×8）×12.5=（1+2）×12.5=3×12.5=37.5，所得答案是37.5

Answer 4

先算括号里面的是12，因为12=3×4，所以原式等于0.25×3×4×12.5，运用乘法结合律可以得到（0.25×3）×（4×12.5）=0.75×50=37.5

Answer 5

0.25×（4+8）×12.5
=0.25×4+8×0.25×12.5
=1+2×12.5
=3×12.5
=37.5