一、口算。
8 + 5 =
7 + 8 =
7 + 5 =
13 - 8 =
15 - 7 =
12 - 7 =
8 + 8 =
8 + 4 =
7 + 4 =
16 - 8 =
12 - 8 =
11 - 7 =
8 + 3 =
7 + 7 =
7 + 9 =
11 - 8 =
14 - 7 =
16 - 7 =
8 + 7 =
8 + 6 =
10 + 8 =
15 - 8 =
14 - 8 =
18 - 8 =
7 + 6 =
8 + 9 =
7 + 10 =
13 - 7 =
17 - 8 =
17 - 7 =
8 + 5 =
7 + 8 =
7 + 5 =
13 - 8 =
15 - 7 =
12 - 7 =
8 + 8 =
8 + 4 =
7 + 4 =
16 - 8 =
12 - 8 =
11 - 7 =
8 + 3 =
7 + 7 =
7 + 9 =
11 - 8 =
14 - 7 =
16 - 7 =
8 + 7 =
8 + 6 =
10 + 8 =
15 - 8 =
14 - 8 =
18 - 8 =
7 + 6 =
8 + 9 =
7 + 10 =
13 - 7 =
17 - 8 =
17 - 7 =
答案
一、13 15 12
5 8 5
16 12 11
8 4 4
11 14 16
3 7 9
15 14 18
7 6 10
13 17 17
6 9 10
5 8 5
16 12 11
8 4 4
11 14 16
3 7 9
15 14 18
7 6 10
13 17 17
6 9 10
二、在□里填合适的数。
8 + □ = 11
□ + 7 = 14
8 + □ = 12
□ + 7 = 15
8 + □ = 17
8 + □ = 14
7 + □ = 11
□ + 8 = 15
7 + □ = 13
8 + □ = 11
□ + 7 = 14
8 + □ = 12
□ + 7 = 15
8 + □ = 17
8 + □ = 14
7 + □ = 11
□ + 8 = 15
7 + □ = 13
答案
二、3 7 4
8 9 6
4 7 6
8 9 6
4 7 6
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