题目内容
18×
+0.65×
-
×18+
×0.65= .
| 3 |
| 7 |
| 8 |
| 13 |
| 2 |
| 7 |
| 5 |
| 13 |
分析:先进行分组,然后各组运用乘法分配律简算.
解答:解:18×
+0.65×
-
×18+
×0.65
=(
-
)×18+0.65×(
+
)
=
×18+0.65×1
=
+
=
故答案为:
.
| 3 |
| 7 |
| 8 |
| 13 |
| 2 |
| 7 |
| 5 |
| 13 |
=(
| 3 |
| 7 |
| 2 |
| 7 |
| 8 |
| 13 |
| 5 |
| 13 |
=
| 1 |
| 7 |
=
| 18 |
| 7 |
| 13 |
| 50 |
=
| 991 |
| 350 |
故答案为:
| 991 |
| 350 |
点评:仔细观察数据,运用运算定律进行计算,同时注意数字转化.
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