一、在□里填上合适的数。
5 + □ = 12
7 + □ = 13
6 + □ = 6
10 + □ = 14
2 + □ = 15
12 - □ = 9
3 + □ = 11
6 + □ = 13
11 - □ = 7
suàn yi suàn
5 + □ = 12
7 + □ = 13
6 + □ = 6
10 + □ = 14
2 + □ = 15
12 - □ = 9
3 + □ = 11
6 + □ = 13
11 - □ = 7
suàn yi suàn
答案
7 6 0 4 13 3 8 7 4
二、算一算。
11 16 13 15 14 12 10
-6
-7
kàn tú liè shì jì suàn
11 16 13 15 14 12 10
-6
5
10
7
9
8
6
4
-7
4
9
6
8
7
5
3
kàn tú liè shì jì suàn
答案
5 10 7 9 8 6 4 4 9 6 8 7 5 3
三、看图列式计算。
1.
□○□=□(人)
2.
□○□=□(朵)
1.
□○□=□(人)
2.
□○□=□(朵)
答案
1. 17 - 9 = 8
2. 14 - 6 = 8
2. 14 - 6 = 8
3. 
□ + □ = □
□ + □ = □
□ - □ = □
□ - □ = □
4. □ + □ = □
□ + □ = □
□ - □ = □
□ - □ = □
□ + □ = □
□ + □ = □
□ - □ = □
□ - □ = □
4. □ + □ = □
□ + □ = □
□ - □ = □
□ - □ = □
答案
3. 5 + 6 = 11
6 + 5 = 11
11 - 5 = 6
11 - 6 = 5
4. 7 + 8 = 15
8 + 7 = 15
15 - 7 = 8
15 - 8 = 7
6 + 5 = 11
11 - 5 = 6
11 - 6 = 5
4. 7 + 8 = 15
8 + 7 = 15
15 - 7 = 8
15 - 8 = 7
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