I. Simplify

1) 2 + (7 x 3) - 5 =

2) 3 x 4 ÷ (7 – 5) – 12 ÷ 4 =

3) 2 + 4 x 3 – 6 ÷ 2 =

4) 12 ÷ 6 x 2 + 4 – 5 =

5) 6² ÷ 3 x 2 + 5 – 1 =

6) 32 ÷ 2 x 2³ =

7) 7¹ x 7º =

8) 3 x [4 – 2 x (10 – 8) + 12 ÷ 6 x 1] =

9) 5 + (3²)² =

10) 14 ÷ 2 – 3 + 2 x 5 =

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