Question

1.25X5.5+0.125×45这题要怎么做啊？

这道题怎么做啊

Answer 1

1.25X5.5+0.125×45这题要怎么做啊
解题思路：简便运算核心是运用加法和乘法各种定律进行计算，计算出整数部分方便后续计算的过程
解题过程：
1.25X5.5+0.125×45=
1.25×（5.5+4.5）=
1.25×10=12.5
存疑请追问，满意请采纳

Answer 2

这道题的话，要把四书五变成4.5，四点5+5点5=10，然后再乘以1.25

Answer 3

1.25×5.5+0.125×45
=1.25×5.5+1.25×4.5
=1.25×（5.5+4.5）
=1.25×10
=12.5

Answer 4

1.25×5.5+0.125×45
=1.25×5.5+1.25×0.1×45
=1.25×5.5+1.25×4.5
=1.25×(5.5+4.5)
=1.25×10
=12.5