20以内混合加减法练习题
一、直接加减
1. 8 + 4 =
2. 12 – 2 =
3. 16 – 6 =
4. 7 + 7 =
5. 10 – 10 =
6. 13 – 3 =
7. 5 + 9 =
8. 18 – 8 =
9. 14 – 4 =
10. 6 + 10 =
二、带括号的加减
1. 10 – (2 + 3) =
2. 15 – (5 + 5) =
3. 18 – (2 + 6) =
4. 6 + (3 + 4) =
5. 14 – (4 + 4) =
6. 9 – (1 + 1) =
7. 12 – (2 + 2) =
8. 11 – (1 + 5) =
9. 17 – (3 + 3) =
10. 8 + (2 + 2) =
三、混合加减
1. 7 + 3 – 5 =
2. 15 – 6 + 4 =
3. 9 + 4 – 7 =
4. 12 – 2 + 3 =
5. 10 – 4 + 6 =
6. 14 – 8 + 2 =
7. 6 + 2 – 4 =
8. 18 – 9 + 1 =
9. 11 – 1 + 3 =
10. 16 – 6 + 1 =
答案及解析
一、直接加减
1. 8 + 4 = 12
2. 12 – 2 = 10
3. 16 – 6 = 10
4. 7 + 7 = 14
5. 10 – 10 = 0
6. 13 – 3 = 10
7. 5 + 9 = 14
8. 18 – 8 = 10
9. 14 – 4 = 10
10. 6 + 10 = 16
二、带括号的加减
1. 10 – (2 + 3) = 10 – 5 = 5
2. 15 – (5 + 5) = 15 – 10 = 5
3. 18 – (2 + 6) = 18 – 8 = 10
4. 6 + (3 + 4) = 6 + 7 = 13
5. 14 – (4 + 4) = 14 – 8 = 6
6. 9 – (1 + 1) = 9 – 2 = 7
7. 12 – (2 + 2) = 12 – 4 = 8
8. 11 – (1 + 5) = 11 – 6 = 5
9. 17 – (3 + 3) = 17 – 6 = 11
10. 8 + (2 + 2) = 8 + 4 = 12
三、混合加减
1. 7 + 3 – 5 = 5
2. 15 – 6 + 4 = 13
3. 9 + 4 – 7 = 6
4. 12 – 2 + 3 = 13
5. 10 – 4 + 6 = 12
6. 14 – 8 + 2 = 8
7. 6 + 2 – 4 = 4
8. 18 – 9 + 1 = 10
9. 11 – 1 + 3 = 13
10. 16 – 6 + 1 = 11
以上是一份20以内混合加减法练习题，包括直接加减、带括号的加减和混合加减三种题型，旨在帮助学生强化训练，查漏补缺。