计算(能简算的要简算)
7.24×0.1+0.5×72.4+0.049×724
+
+
+
2012÷2012
(3+
÷
+3)-(7×
÷7×
)
7.24×0.1+0.5×72.4+0.049×724
| 1 |
| 3×5 |
| 1 |
| 5×7 |
| 1 |
| 7×9 |
| 1 |
| 9×11 |
2012÷2012
| 2012 |
| 2013 |
(3+
| 3 |
| 4 |
| 3 |
| 4 |
| 1 |
| 6 |
| 1 |
| 6 |
| 1 |
| 3×5 |
| 1 |
| 5×7 |
| 1 |
| 7×9 |
| 1 |
| 9×11 |
| 2012 |
| 2013 |
| 3 |
| 4 |
| 3 |
| 4 |
| 1 |
| 6 |
| 1 |
| 6 |