1. In the expression 2⁴, the base is

16 4 2 8

2. In the expression 7³, the index (exponent) is

3 7 343 21

3. What does 2⁴ mean?

2 + 2 + 2 + 2 4 × 4 2 × 2 × 2 × 2 2 × 4

4. Write 3 × 3 × 3 × 3 in index form.

12 3⁴ 3 × 4 4³

5. Find the value of 2⁵.

25 16 32 10

6. Find the value of 5³.

125 25 15 53

7. Find the value of 3⁴.

27 64 12 81

8. Find the value of 4² × 1¹⁰.

160 16 8 40

9. Find the value of 2³ × 3².

72 30 36 48

10. Find the value of 2² × 5³.

1,000 100 400 500

11. Which of these is a prime number?

9 15 17 21

12. Express 12 as a product of prime factors in index form.

2 × 6 2² × 3 3 × 4 2³ × 3

13. Express 81 as a product of prime factors in index form.

4³ 27 × 3 9² 3⁴

14. Express 16 × 27 as a product of prime factors in index form.

2⁴ × 3⁴ 6⁷ 2⁴ × 3³ 2³ × 3⁴

15. Express 24 as a product of prime factors in index form.

3 × 8 2² × 6 2² × 3² 2³ × 3

16. What is the HCF of 24 and 30?

6 120 12 3

17. Find the HCF of 40 and 60.

10 20 40 120

18. To find the HCF of two numbers using their prime factors in index form, we multiply

all the prime bases, each with its highest power the common prime bases, each with its highest power only the prime bases found in one number the common prime bases, each with its lowest power

19. A trader has 36 tomatoes and 48 onions. She packs them into the largest possible number of bags, each with the same number of tomatoes and the same number of onions, with none left over. How many bags does she make?

24 12 6 144

20. Express the number 360 as a product of its prime factors in index form.

A. 22 ×33 ×5 B. 23 ×3×52 C. 23 ×32 ×5 D. 2×32 ×52