题目内容
脱式计算．
①4050-6300÷42
②5.04×6.5-2.76
③175×
+
×175
⑤13÷(
+
)×
⑥
×[
÷(
-
)]．
①4050-6300÷42
②5.04×6.5-2.76
③175×
| 3 |
| 10 |
| 7 |
| 10 |
⑤13÷(
| 1 |
| 4 |
| 5 |
| 6 |
| 3 |
| 4 |
⑥
| 8 |
| 15 |
| 5 |
| 6 |
| 7 |
| 9 |
| 1 |
| 3 |
（1）4050-6300÷42
=4050-6300÷7÷6，
=4050-150，
=3900；
（2）5.04×6.5-2.76
=32.76-2.76，
=30；
（3）175×
| 3 |
| 10 |
| 7 |
| 10 |
=（
| 3 |
| 10 |
| 7 |
| 10 |
=1×175，
=175；
（5）13÷(
| 1 |
| 4 |
| 5 |
| 6 |
| 3 |
| 4 |
=13÷
| 13 |
| 12 |
| 1 |
| 4 |
=12×
| 1 |
| 4 |
=3；
（6）
| 8 |
| 15 |
| 5 |
| 6 |
| 7 |
| 9 |
| 1 |
| 3 |
=
| 8 |
| 15 |
| 5 |
| 6 |
| 4 |
| 9 |
=
| 8 |
| 15 |
| 45 |
| 24 |
=1；
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