The commutative and associative rules do not apply to subtraction and division.

For example:

- 6 – 5 ≠ 5 – 6
- 12 ÷ 3 ≠ 3 ÷ 12
- (12 – 3) – 1 ≠ 12 – (3 – 1)
- (12 ÷ 3) ÷ 2 ≠ 12 ÷ (3 ÷ 2)

#### Question 1

Calculate each of the following.

a | (36 ÷ 6) ÷ 3 = | ||
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b |

#### Question 2

Calculate each of the following.

a | |||
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b |