1.2.1 Order of operation SOLUTION KEY by Matt Wright

1. –4 + 2 (-5 +3)² = -4 +2 (-2)² = -5 (4) = -20

2. 13 + (20 – 9) = 13 + (11) = 24

3. 6 x 2 + 35 ÷ 5 = 12 + 7 = 19

4. 16 ÷ (2 + 6) x 10 = 16 ÷ ( 8 ) x 10 = 2 x 10 = 20

5. 4³ = 4 x 4 x 4 = 64

6. (-4)³ = ( -4 x -4 x -4) = -64

7. –3³ = - (3 x 3 x 3) = - (27) = -27

8. –(3)³ = - ( 3 x 3 x 3) = - (27) = -27