Page 105 - Maths Skills - 7

6 6 E
Exponents and Powersxponents and Powers

Learning Outcomes

In this chapter, you will learn about:
� Exponents � Laws of exponents
� Powers of negative integers � Expressing large numbers in the standard form

Boot-Up (To Recapitulate Previous Knowledge of Concepts)

COMPETENCY BASED QUESTIONS

A. Multiple-Choice Questions
1. 2 =
4
(i) 2 + 2 + 2 + 2 (ii) 2 × 4 (iii) 4 × 2 (iv) 2 × 2 × 2 × 2

2. 5 =
3
(i) 15 (ii) 125 (iii) 8 (iv) 245
3. 100 =
0
(i) 100 (ii) 0 (iii) 1 (iv) None of the above
4. 9 × 9 × 9 × 9 × 9
(i) 9 × 5 (ii) 5 × 9 (iii) 9 (iv) 9 + 5
5

B. Fill in the Blanks
1. 6 cubed is the same as ________.
2. An expression that represents repeated addition is called ________.

3. An expression that represents repeated multiplication of the same factor is called a ________.
4. x + x + x + x + x = ________.

C. Write ‘T’ for true and ‘F’ for false Statements

1. 8 + 8 + 8 + 8 + 8 + 8 = 6 × 8

2. 7 + 7 = 7
2
3. 5 = 5 × 2
2
4. P × P = P
2