题目内容
简算题:
29.4+45.73+100.6+14.27
×7
+0.25×3
+
.
29.4+45.73+100.6+14.27
| 1 |
| 4 |
| 5 |
| 7 |
| 2 |
| 7 |
| 1 |
| 4 |
29.4+45.73+100.6+14.27
=(29.4+100.6)+(45.73+14.27)
=130+60
=190;
×7
+0.25×3
+
=
×(7
+3
+1)
=
×12
=3.
=(29.4+100.6)+(45.73+14.27)
=130+60
=190;
| 1 |
| 4 |
| 5 |
| 7 |
| 2 |
| 7 |
| 1 |
| 4 |
=
| 1 |
| 4 |
| 5 |
| 7 |
| 2 |
| 7 |
=
| 1 |
| 4 |
=3.
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