Saturday, 9 May 2020

Grade 8: Rational Numbers @1

1. Rational Numbers 

Grade :8


1. What number should be added to -5/8 so as to get 5/9 ?

2. What should be subtracted from -3/4 so as to get 5/6 ?

3. Evaluate : (5/63)  -  (-8/21)

4. The sum of two numbers is (-1/3). If one of the numbers is (-12/3) , find the other ?

5. The sum of two rational numbers is -8. If one of the numbers is (-15/7), find the other ?

6. What should be added to (1/2 + 1/3 + 1/5 ) to get 3 ?

7. What should be subtracted from (3/4 -2/3 ) to get -1/6 ?

8. Fill in the blanks : a)  -9/14 + ------- =  -1
           b) ------ + 15/23 = 4

9. Simplify :

a) -3/2 +5/4 - 7/4

b) 5/3 -7/6 + -2/3

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