题目内容
| 36×45= | 2.6+12.75= | 78×22= | 87×21= |
(1)36×45=1620;
36
;
(2)2.6+12.75=15.35;
2.6
;
(3)78×22=1716;
78
;
(4)87×21=1827;
87
.
36
| ×45 |
| 180 |
| 144 |
| 1620 |
(2)2.6+12.75=15.35;
2.6
| +12.75 |
| 15.35 |
(3)78×22=1716;
78
| ×22 |
| 156 |
| 156 |
| 1716 |
(4)87×21=1827;
87
| ×21 |
| 87 |
| 174 |
| 1827 |
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