Playing with numbers MCQ Questions Class 8 Maths Chapter 16
Chapter 16
Playing with numbers
Question 1:
10×6+7 write in the —— form.
(a) 60
(b) 64
(c) 67
(d) 62
Ans:
67 (c) = 10 × 6 + 7
= 60 + 7 = 67
Question 2:
Write 26 in generalised form.
(a) 10 × 2 + 6
(b) 10 × 6 + 2
(c) 10 + 2
(d) 10 × 6
Ans:
26 = 10×2 + 6 (a)
Question 3:
Find the values of the letters
5P
P6
___
78
(a) 4
(b) 3
(c) 2
(d) 5
Ans:
P = 2 (c)
Question 4:
Find the values of the letters
(a) A = 2, B = 5
(b) A = 2
(c) B = 5
(d) A = 5
Ans:
(a) A = 2, B = 5, A B
if we put B = 5 and A = 2 then we get answer
25
x 5
_____
125
Question 5:
Question 6:
Question 7:
Question 8:
Which no. is divisible by 6
(a) 63
(b) 72
(c) 79
(d) 81
Ans:
(b) 72, 72÷6 = 12
Question 9:
If 31 x 5 is multiple of 5, where x is a digit, what is the value of x?
(a) x = 5
(b) x = 4
(c) x = 3
(d) x = 2
Ans:
31x 5 is multiple of 5
3125 ÷ 5 = 625
x = 2 (d)
Question 10:
1728 this number is divisible by which number?
(a) 12
(b) 13
(c) 15
(d) 14
Ans:
1728 this number is divisible by 12, 1728 ÷ 12 = 144
Question 11:
Question 12:
3880 this number is divisible by which no.?
(a) 7
(b) 10
(c) 9
(d) 11
Ans:
(b) 10, 3880 ÷ 10 = 388
Question 13:
Write the following numbers in generallsed form 1337
(a) 3 × 10 + 10 × 7
(b) 3 × 100 + 1 × 10 + 7
(c) 10 × 7 + 3 × 5
(d) 1 × 100 + 3 × 10 + 7
Ans:
1 × 100 + 3 × 10 + 7 (d)
= 137
Question 14:
Write the following in the usual form.
100 × 7 + 10 × 6 + 7
(a) 677
(b) 867
(c) 767
(d) 768
Ans:
100 × 7 + 10 × 6 + 7
= 700 + 60 + 7
= 767 (c)
Question 15:
If 40 y6 is a multiple of 4, where y is a digit, what might be the value of y?
(a) 11
(b) 10
(c) 9
(d) 7
Ans:
When we put y = 9 then we get the 4096÷4 = 1024
y = 9 (c)
Here is your solution of Playing with numbers MCQ Questions Class 8 Maths Chapter 16
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