Question

三点七二加十四点二五加二点二八简便运算三点3.72加14.25加2.28简便运算？

Answer 1

你在问问题前是不是可以观察一下，比如这道题先观察它们的小数看是不是能凑上整数，这三个数相加第一个和第三个数相加后小数可以进位成整数，那么根据加法交换律交换相加，整数再加小数也好算。
3.72+14.25+2.28
=3.72+2.28+14.25
=6+14.25
=20.25

Answer 2

3.72+14.25+2.28=3.72+2.28+14.25
=6+14.25=20.25

Answer 3

3.72+14.25+2.28
=（3.72+2.28）+14.25
=6+14.25
=20.25

Answer 4

3.72+14.25+2.28=(3.72+2.28)+14.25=6+14.25=20.25