可以自制表格添加函数，随机出题
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第1个回答 2014-08-15
20-14 12+5 5+5 5-1
第2个回答 2014-08-15
15+3
12-8
20-5
16+4
5+9
6+7
8+3
14+5
18-6
14-3
16-9
17-8
12-8
20-5
16+4
5+9
6+7
8+3
14+5
18-6
14-3
16-9
17-8
第3个回答 2020-12-28
幼升小20以内加减法口算技巧！用这个方法，小孩很快就学会，家长都不头疼！
本回答被网友采纳第4个回答 2014-08-15
18- 5 = 17-11 = 13+ 6 = 17- 5 = 16-10 = 5 - 4 = 9 - 4 = 16- 1 = 7 +10 = 9 - 0 = 18+ 1 = 6 +10 = 4 - 0 = 18-12 = 17-17 = 10+ 2 = 10-10 = 9 - 0 = 15- 0 = 4 + 1 = 0 +16 = 2 + 2 = 13-12 = 4 +12 = 13+ 4 = 6 - 5 = 15-13 = 14+ 1 = 3 +12 = 0 + 0 = 0 +17 = 7 - 2 = 2 +14 = 11-10 = 11+ 4 = 10+ 4 = 14- 3 = 11- 1 = 3 - 1 = 13- 2 = 12- 0 = 11+ 0 = 13-10 = 15+ 4 = 3 + 5 = 10+ 7 = 0 + 1 = 19-14 = 11+ 1 = 17- 1 = 16+ 2 = 16- 4 = 3 + 4 = 1 +14 = 14+ 2 = 4 +12 = 12+ 5 = 14+ 1 = 10+ 8 = 17-15 = 15- 3 = 9 - 8 = 11+ 5 = 16+ 1 = 12+ 3 = 17-12 = 1 +17 =