MATHS
INTERNATIONAL INDIAN SCHOOL, RIYADH
VI – VIII SECTION
CLASS : VIII
MATHEMATICS WORKSHEET
RATIONAL NUMBERS
1. Using appropriate properties find:
(a) [pic] =
(b) [pic]
2. Write the additive inverse of each of the following :
(a) [pic] (b) [pic] (c) [pic] (d) [pic] (e) [pic]
3. Verify that ([pic] for
(a) x =[pic] (b) x =[pic]
4. Find the multiplicative inverse of the following :
(a) [pic] (b) [pic] (c) [pic] (d) [pic] (e) [pic] (f) [pic]
5. Name the property under multiplication used in each of the following :
(a) [pic]
5. Name the property under multiplication used in each of the following:
(a)[pic] [pic] =[pic] (b) [pic] [pic] [pic] = [pic] [pic]
(c) [pic] [pic] = 1
6. Multiply [pic] by the reciprocal of [pic]
7. Tell what property allows you to compute [pic] [pic] as [pic] [pic] [pic]
8. Is [pic] the multiplicative inverse of [pic] Why or why not?
9. Is 0.3 the multiplicative inverse of 3 [pic]Why or why not?
10. Write:
(a)The rational number that does not have a reciprocal.
(b)The rational numbers those which are equal to their reciprocals.
(c)The rational number that is equal to its negative.
11. Fill in the blanks:
(a)Zero has________ reciprocal.
(b)The numbers___________ and __________ are their own reciprocals.
(c)The reciprocal of -5 is___________
(d)Reciprocal of 1/x, where x [pic]0 is_________
(e)The product of two rational number is always a__________
(f)The reciprocal of a positive rational number is___________
12. Represent these numbers on a number line:
(a) [pic] (b) [pic]
13. Represent [pic] , [pic], [pic] on the number line.
14. Write five rational numbers which are smaller than 2.
15. Find ten rational numbers between [pic] and [pic]
16. Find five rational numbers between:
(a) [pic] and [pic] (b) [pic] and [pic] (c) [pic] [pic]
17. Write five rational numbers greater than [pic]2
18. Find ten rational numbers between [pic] and [pic]
19. Find [pic] + [pic] + [pic]+ [pic]
20. Find [pic] [pic] [pic] [pic]
21. Write the additive inverse of the following:
(a) [pic] (b) [pic]
22. Verify that – (-x) is the same as x for:
(a) x = [pic] (b) x = [pic]
23. Find [pic] [pic] –[pic] – [pic] [pic] [pic]
24. Write any three rational numbers between –2 and 0
25. Find any ten rational numbers between [pic]and [pic]
26. Find a rational number between [pic] and [pic]
27. Find three rational numbers between[pic] and [pic]
VI – VIII GIRLS, IISR
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