CBSE Class 8 Mathematics Rational Numbers Worksheet Set 06

CBSE Class 8 Mathematics Worksheet - Rational Numbers (5)

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I. Fill in the blanks

1. _____________ has no reciprocal.

2. There are _______________ numbers of a rational numbers between any two numbers.

3. The product of a number and its multiplicative inverse is __________.

4. Sum of a number and its negative is ____________.

5. ___________ is the multiplicative identity.

6. ___________ is the additive identity.

7. Additive inverse of 3 is _______.

7

8. Multiplicative inverse of -2 is ______.

9. The numbers _______ and _________ are their own reciprocals.

II. Find the value of the following:-

i) -21 x 15 x -35 ii) -43 x (-8 + 3)

25 -49 9 45 5 5

iii)-21 + 7 – (-4) iv) – 72 / 32

15 25 25 45 25

III. Verify – (-x) = x by taking -2.

5

IV. Represent - 3 and 9 on a number line.

7 7

V. State the property used in the following :-

i) -3 x 7 = 7 x -3 ii) (-2 + 5 ) + ( 3 ) = -2 + ( 5+ 3)

58 8 5 3 7 5 3 7 5

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