题目内容
计算下列各题.
450÷18×2.5+4.96
48×(3.15-2.9)+3.6
×[
÷(
+
)]
9.57+(1.9×3.6-3.6)
450÷18×2.5+4.96
48×(3.15-2.9)+3.6
| 4 |
| 5 |
| 13 |
| 16 |
| 3 |
| 4 |
| 1 |
| 3 |
9.57+(1.9×3.6-3.6)
450÷18×2.5+4.96
=25×2.5+4.96,
=62.5+4.96,
=67.46;
48×(3.15-2.9)+3.6
=48×0.25+3.6,
=12+3.6,
=15.6;
×[
÷(
+
)]
=
×[
÷
],
=
×
,
=
;
9.57+(1.9×3.6-3.6)
=9.7+[(1.9-1)×3.6],
=9.7+[0.9×3.6],
=9.7+3.24,
=12.94.
=25×2.5+4.96,
=62.5+4.96,
=67.46;
48×(3.15-2.9)+3.6
=48×0.25+3.6,
=12+3.6,
=15.6;
| 4 |
| 5 |
| 13 |
| 16 |
| 3 |
| 4 |
| 1 |
| 3 |
=
| 4 |
| 5 |
| 13 |
| 16 |
| 13 |
| 12 |
=
| 4 |
| 5 |
| 3 |
| 4 |
=
| 3 |
| 5 |
9.57+(1.9×3.6-3.6)
=9.7+[(1.9-1)×3.6],
=9.7+[0.9×3.6],
=9.7+3.24,
=12.94.
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