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Mathematics
Class 7
Rational Numbers
Q1)
Multiply:
(2 Marks)
Q2)
The product of two rational numbers is always a --------- number.
(2 Marks)
Q3)
Fill in the blank with the correct symbol < , = or > :
(2 Marks)
Q4)
Fill in the blanks to make statement true:
(2 Marks)
Q5)
(-2)/3 , 2/(-3) , - 2/3 are all -------------------.
(2 Marks)
Q6)
0.525 is an example of a ---------- decimal.
(2 Marks)
Q7)
Fill in the blanks to make statement true:
(2 Marks)
Q8)
If the denominator of a rational number is the standard form contain no prime factor
other than ----- or ----- then we can write it as a terminating decimal.
(2 Marks)
Q9)
Find:
(1 Mark)
a)
b)
c)
d)
16/9
-9/16
9/16
-16/9
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Mathematics
Class 7
Q10)
(1 Mark)
The smallest among
a)
b)
c)
d)
Q11)
is
-1/2
-3/4
-7/6
-1/4
Find the sum of:
(1 Mark)
-2/5 + 3/4 =
a)
b)
c)
d)
Q12)
Find:
a)
b)
c)
d)
Q13)
3/20
1/20
7/20
-7/20
(1 Mark)
35/6
-35/6
6/35
None of these
Write the additive inverse of:
(2 Marks)
-7/11
Q14)
Pick out the numerator and denominator from fraction.
(2 Marks)
1/6
Q15)
Sum of two rational numbers is - 4. One number is -11/3. What is the other number?
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(3 Marks)
Mathematics
Class 7
Q16)
Without dividing, check whether the number can be written as terminating decimal or (2 Marks)
not:
45/42
Q17)
Write the following rational numbers in decimal form.
(2 Marks)
243/1000
Q18)
Add the following rational numbers:
(2 Marks)
Q19)
The sum of two rational numbers is 5/11. If one of them is -9/11 , find the other.
(3 Marks)
Q20)
Write any three rational numbers equivalent to
(3 Marks)
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Mathematics
Class 7
Answers
Q1)
-4
Q2)
Rational
Q3)
>
Q4)
-1/8
Q5)
Equivalent
Q6)
Terminating
Q7)
1/3
Q8)
2,5
Q9)
16/9
Q10)
-7/6
Q11)
7/20
Q12)
-35/6
Q13)
7/11
Q14)
Numerator = 1
Denominator = 6
Q15)
-1/3
Q16)
Non-terminating
Q17)
0.243
Q18)
5/9
Q19)
- 14/11
Q20)
7/-5 = 14/-10 = 21/-15 = 28/-20
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