题目内容
用合适的方法计算.
①35×12+350÷70
②54.2-
+4.8-
③0.7÷[(
-
)×24].
①35×12+350÷70
②54.2-
| 2 |
| 9 |
| 16 |
| 9 |
③0.7÷[(
| 5 |
| 6 |
| 1 |
| 4 |
①35×12+350÷70,
=420+5,
=425;
②54.2-
+4.8-
,
=(54.2+4.8)-(
+
),
=59-2,
=57;
③0.7÷[(
-
)×24],
=0.7÷[
×24-
×24],
=0.7÷(20-6),
=0.7÷14,
=0.05.
=420+5,
=425;
②54.2-
| 2 |
| 9 |
| 16 |
| 9 |
=(54.2+4.8)-(
| 2 |
| 9 |
| 16 |
| 9 |
=59-2,
=57;
③0.7÷[(
| 5 |
| 6 |
| 1 |
| 4 |
=0.7÷[
| 5 |
| 6 |
| 1 |
| 4 |
=0.7÷(20-6),
=0.7÷14,
=0.05.
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