7
4 - Rational Numbers: Worksheet–4.2
Name:
1. If
Date:
4 x
=
, then x is equal to
7 49
[a] – 24
[b] 24
2. For what value of a, the number
[a] – 1
3. Additive inverse of −
[b] 1
[c] – 28
−11
is not a rational number?
a
[c] 0
[d] 28
[d] 10
1
is
5
1
1
[a] − [b] [c] 1 5
5
2
[d] 1
4. The decimal equivalent of 27 is
30
[a] 9.0
[b] 0.9
[c] 0.09
[d] 2.7
5. Write three equivalent fractions for each of the following:
3
−5
7
a.
b.
c.
10
−9
6
1 −2 −7 4 −2 4 −7
6. Separate the positive and negative rational numbers: , , , , , ,
4 3 5 −3 −3 −7 2
7. Fill in the blanks.
−4 36
−6
−5
2 −6
=
=
=
a.
b. −9 =
c.
d.
11
99
9 −72
−
3
8. Find the smallest rational number in each of the following group.
4 −5 3
−2 5 −6
, , , , b.
9 6 27
3 −6 5
−9
9. Express
as a rational number with
5
10.Arrange them in descending order:
a.
a.
Grade:
3 11 9 33
, , , 4 8 16 16
b.
−9 −4 −17
, ,
6 3 12
c.
−1 −2 −3
, ,
2 4 6
a. Denominator – 45
c.
−3 7 −5
,
,
5 −10 6
Teacher’s signature:
b. Numerator 54