题目内容
| 3 |
| 7 |
| 6 |
| 7 |
| 3 |
| 7 |
| 6 |
| 7 |
(1)
+
+
+
,
=(
+
)+
+
,
=
+
+
,
=
×3;
(2)0.27×598,
=0.3×600,
≈180.
故答案为:
,3,180.
| 3 |
| 7 |
| 6 |
| 7 |
| 3 |
| 7 |
| 6 |
| 7 |
=(
| 3 |
| 7 |
| 3 |
| 7 |
| 6 |
| 7 |
| 6 |
| 7 |
=
| 6 |
| 7 |
| 6 |
| 7 |
| 6 |
| 7 |
=
| 6 |
| 7 |
(2)0.27×598,
=0.3×600,
≈180.
故答案为:
| 6 |
| 7 |
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