Page 31 - Maths Skills - 8

Large Numbersarge Numbers
L
1 122 Exponents and Powersxponents and Powers
E

Learning Outcomes

In this chapter, you will learn about:
� Integral exponents of a rational number � Laws of exponents � Scientific notation [Use of exponents]

Boot-Up (To Recapitulate Previous Knowledge of Concepts)

COMPETENCY BASED QUESTIONS
A. Multiple-Choice Questions

1. The exponential form of 10,000 is
(i) 100 (ii) 1000 (iii) 4 10000 (iv) 10 4
10
100
2. 5 is ____________ 3 .
3
5
(i) Equal to (ii) Less than (iii) Greater than (iv) None of these
3. (– 1) is equal to ____________
4
(i) – 1 (ii) 0 (iii) 1 (iv) None of these
B. Fill in the Blanks

1. The value of (– 4) is ____________.
3
2. The product of a × a is ____________.
6
2
3. The b ÷ b is ____________.
3
7
4. The value of (2 ) is ____________ or ____________.
3 4
C. Write ‘T’ for true and ‘F’ for false Statements

1. a × a = a
x
y
x– y
2. a ÷ a = a x – y
x
y
3. (a ) = a m + n
m n

4. a = 1
0