题目内容
当a、b是下列各数值时,填写空格中计算的积与和:
| a | 10 | -6 |
| - | -7 | -2 | 0 | - |
| b | -9 | -4 | -6 |
| 0 | -2 | -28 |
|
| ab | ||||||||
| a+b |
答案:
| a | 10 | -6 |
| - | -7 | -2 | 0 | - |
| b | -9 | -4 | -6 |
| 0 | -2 | -28 |
|
| ab | -90 | 24 | -9 | -1 | 0 |
| 0 | - |
| a+b | 1 | -10 | -4.5 | - | -7 | 4 | -28 | - |
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