题目内容
简便运算
0.65-
|
|
0.65-
+6.35-
．
=0.65+6.35-（
+
），
=7-1，
=6；
×
+0.25+
×25%，
=（
+
+1）×0.25，
=2×0.25，
=0.5．
| 1 |
| 4 |
| 3 |
| 4 |
=0.65+6.35-（
| 1 |
| 4 |
| 3 |
| 4 |
=7-1，
=6；
| 2 |
| 9 |
| 1 |
| 4 |
| 7 |
| 9 |
=（
| 2 |
| 9 |
| 7 |
| 9 |
=2×0.25，
=0.5．
练习册系列答案
口算能手系列答案
相关题目