Simplify : 36 - 2 [ 20 + 12 ÷ 4 × 3 -2 × 2 ] + 10 (2 marks)

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Solution

Given :
36 - 2 [ 20 + 12 ÷ 4 × 3 -2 × 2 ] + 10

Solving the things inside the bracket in order of DMAS.
(0.5 marks)
Performing the divison.
= 36 - 2 [ 20 + 3 × 3 -2 × 2 ] + 10

Performing multiplication,
= 36 - 2 [ 20 + 9 - 4 ] + 10

Performing addition,
= 36 - 2 [ 29 - 4 ] + 10

Performing subtraction,
= 36 - 2 [ 25 ] + 10

Now, solving the bracket
= 36 - 50 + 10

Performing addition
= 46 - 50
= -4 (1.5 marks)

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(1) $2 + (- 4) - (+ 3)$

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(4) $12 - (+ 6) + (- 3)$

(5) $- 15 + (- 4) - (+ 3)$

Simplify

36 - 2(20 + 12 $\div$ 4 x 3 - 2 x 2) + 10

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