1. 18 + ___ = 24

2. ___ + 15 = 30

3. 23 + ___ = 29

5. ___ = 17 + 13

6. 27 = 20 + ___

7. ___ = 19 + 10

8. 40 = ___ + 20

4. 12 + ___ = 27 

1. 29 − 18 = ___

2. 30 − 20 = ___

3. 15 − 15 = ___

4. ___ − 15 = 15

5. ___ − 22 = 7 

6. 24 − ___ = 16

8. 30 − 22 = ___

7. 36 − 28 = ___  

1. 4 + 9 − 6 = ___

2. 25 − 20 + 9 = ___

3. 13 + 8 + 9 = ___

4. 30 − 15 − 10 = ___

5. 35 + 20 − 15 = ___

6. 40 + 20 − 10 = ___

7. 40 − 12 + 20 = ___

8. 50 − 10 − 30 = ___

1. 10 × 5 = ___

2.  8 × 3 = ___

3.  6 × 4 = ___

4.  9 × 3 = ___

5. 12 × 2 = ___

6. 10 × 5 = ___

7.  8 × 10 = ___

8.  5 × 5 = ___

1. 28 ÷ 4 = ___

2. 14 ÷ 2 = ___

3.  6 ÷ 3 = ___

4. 15 ÷ 5 = __

5. 12 ÷ 3 = ___

6.  4 ÷ 2 = ___

7.  6 ÷ 2 = ___

8.  9 ÷ 3 = ___