题目内容
| 怎样简便就怎样算． 7×（
|
| 0.32×6.7+3.2×0.33 |
|
（1）7×（
+
）×8，
=7×8×
+7×8×
，
=16+21，
=37；
（2）
÷9+
÷
，
=
×
+
×
，
=（
+
）×
，
=1×
，
=
；
（3）0.32×6.7+3.2×0.33，
=3.2×0.67+3.2×0.33，
=（0.67+0.33）×3.2，
=1×3.2，
=3.2；
（4）
×[
-（
+
）]，
=
×[
-
-
]，
=
×[
-
]，
=
×
，
=
．
| 2 |
| 7 |
| 3 |
| 8 |
=7×8×
| 2 |
| 7 |
| 3 |
| 8 |
=16+21，
=37；
（2）
| 1 |
| 5 |
| 1 |
| 5 |
| 9 |
| 8 |
=
| 1 |
| 5 |
| 1 |
| 9 |
| 1 |
| 5 |
| 8 |
| 9 |
=（
| 1 |
| 9 |
| 8 |
| 9 |
| 1 |
| 5 |
=1×
| 1 |
| 5 |
=
| 1 |
| 5 |
（3）0.32×6.7+3.2×0.33，
=3.2×0.67+3.2×0.33，
=（0.67+0.33）×3.2，
=1×3.2，
=3.2；
（4）
| 4 |
| 9 |
| 3 |
| 4 |
| 3 |
| 16 |
| 1 |
| 4 |
=
| 4 |
| 9 |
| 3 |
| 4 |
| 1 |
| 4 |
| 3 |
| 16 |
=
| 4 |
| 9 |
| 1 |
| 2 |
| 3 |
| 16 |
=
| 4 |
| 9 |
| 5 |
| 16 |
=
| 5 |
| 36 |
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