摘要:7-5= 10-4= 5+8= 17-7= 6+7= 6+8= 4+9= 9-5= 10-6= 9+9= 10-7= 8-5 15-10= 9+3= 3+15= 9+9= 5+7= 7+8= 9+10= 17-10= 5-3= 9+6= 1+16= 5+4= 8+4= 2+8= 5+6= 14-10= 16-10= 10-9= 8+5= 2+7= 7+7= 14-10= 9-8= 6-0= 8+8= 17-10= 3+7= 18-10= 3+14= 17-4= 14-4= 6+12= 7+9= 2+2+3= 9-4-2= 8-6+5= 6-3+2= 10-2+7= 8-3-4= 3+14-7= 10-6+3= 6+8-4= 3+7-5= 6+8-4= 1.2题每空0.5分.其它每空1分) 5-4+9= 6+4-5= 8-6-2= 3+8-10= 二. 我会填. (30分. 4 6 10 1 . 11
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| 比一比. 3+6 |
6 |
9-2 |
| 5-2 |
2 |
4-3 |
| 14 |
19 |
17+2 |
| 15-5 |
16 |
17-4 |
(2)
(3)
(4)你还能提出什么数学问题?请解答. 查看习题详情和答案>>
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① | ② | ③ | ④ | ⑤ | … | |
| ① | 1 | 4 | 9 | 16 | 25 | ||
| ② | 2 | 3 | 8 | 15 | 24 | ||
| ③ | 5 | 6 | 7 | 14 | 23 | ||
| ④ | 10 | 11 | 12 | 13 | 22 | ||
| ⑤ | 17 | 18 | 19 | 20 | 21 | ||
| … | |||||||
| ⑩ |