Page 60 - Maths Skills - 7

Rational Numbersers
4 4 Rational Numb

Learning Outcomes

In this chapter, you will learn about:
� Facts about rational numbers � Representation of rational numbers on � Rational numbers between
� Positive and negative rational numbers the number line two rational numbers
� Equivalent rational numbers � Comparison of rational numbers � Operations on rational number
� Standard form of a rational number � Decimal number as rational/ irrational number

Boot-Up (To Recapitulate Previous Knowledge of Concepts)

COMPETENCY BASED QUESTIONS

A. Multiple-Choice Questions
1. Which of the following rational numbers is the smallest?
(i) 4/9 (ii) – 5/6 (iii) – 7/–12 (iv) 11/–24
2. The reciprocal of a negative rational number ______________

(i) is a positive rational number (ii) is a negative rational number
(iii) can be either a positive or a (iv) does not exist
negative rational number
3. ______________ is the rational number equal to its negative.

(i) 0 (ii) – 1 (iii) 1 (iv) 2
4. Which of the following rational numbers is in the standard form?
(i) – 9/28 (ii) – 26/78 (iii) – 14/16 (iv) 48/– 96

B. Fill in the Blanks
1. Multiplicative inverse of zero is ________________.

2. The reciprocal of ________________ is equal to itself.
3. ________________ is an additive identity for rational numbers.

4. ________________ is an multiplicative identity for rational numbers.

C. Write ‘T’ for true and ‘F’ for false Statements
1. Any fraction with non-zero denominator is a rational number.

2. Any rational number can be written as a fraction as well as a decimal.

3. Every integer is not a rational number.
4. A number is a rational number if we can write it as a fraction, where both numerator and
denominator are integers.