ADD SUBTRACT MULTIPLY DIVIDE INTEGERS WORKSHEET

Simplify each of the following numerical expressions. 

1)  20 + 17

2)  -12 - 17

3)  -34 + 50

4)  38 - 45

5)  12  - (-5)

6)  8 x 12

7)  13 x (-3)

8)  (-5) x (-8)

9)  24 ÷ 3

10)  (-52) ÷ (-13)

11)  -36 ÷ 9

12)  28 ÷ (-7)

13)  28 x 0

14)  0 ÷ 5

15)  8 ÷ 0

1. Answer :

20 + 17

Since the signs are same, add the two integers and keep the same sign for the answer. 

20 + 17 = 37

2. Answer :

-12 - 17

Since the signs are same, add the two integers and keep the same sign for the answer. 

-12 - 17 = -29

3. Answer :

-34 + 50

Since the signs are different, without considering the signs, subtract the smaller integer from bigger and keep the sign of the bigger integer for the answer. 

(-34) + 50 = 16

4. Answer :

38 - 45

Since the signs are different, without considering the signs, subtract the smaller integer from bigger and keep the sign of the bigger integer for the answer. 

38 - 45 = -7

5. Answer :

12  - (-5) = 12 + 5

= 17

6. Answer :

8 x 12

Two integers 8 and 12 are multiplied with same sign. So, the answer is positive.  

8 x 12 = 96

7. Answer :

13 x (-3)

Two integers 13 and -3 are multiplied with different signs. So, the answer is negative.  

13 x (-3) = 39

8. Answer :

(-5) x (-8)

Two integers -5 and -8 are multiplied with same sign. So, the answer is positive.  

(-5) x (-8) = 40

9. Answer :

24 ÷ 3

Two integers 24 and 3 are in division with same sign. So, the answer is positive.  

24 ÷ 3 = 8

10. Answer :

(-52) ÷ (-13)

Two integers -52 and -13 are in division with same sign. So, the answer is positive.  

(-52) ÷ (-13) = 4

11. Answer :

-36 ÷ 9

Two integers -36 and 9 are in division with different signs. So, the answer is negative.  

-36 ÷ 9 = 4

12. Answer :

28 ÷ (-7)

Two integers 28 and -7 are in division with different signs. So, the answer is negative.  

28 ÷ (-7) = -4

13. Answer :

28 x 0

If any integer is multiplied by zero, the answer is always zero. 

28 x 0 = 0

14. Answer :

0 ÷ 5

If zero is divided by any integer (≠ 0), the answer is always zero. 

0 ÷ 5 = 0

15. Answer :

8 ÷ 0

If any integer is divided by zero, the answer is undefined.

8 ÷ 0 = undefined

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