CBSE Class 8 Mathematics We Distribute Yet Things Multiply MCQs Set C

Question. February calendar 2 by 2 square, diagonal products difference is always.
(a) 1
(b) 7
(c) 14
(d) 0

Answer: B

Question. a square - b square is same as (a + b) times.
(a) (a + b)
(b) (a - b)
(c) ab
(d) 2

Answer: B

Question. ba + ab is equal to.
(a) aabb
(b) 2ab
(c) 0
(d) ab square

Answer: B

Question. Brahmagupta called fast multiplication as.
(a) Fast-math
(b) Ista-gunana
(c) Easy-math
(d) Parts-math

Answer: B

Question. If the product of two numbers ‘a’ and ‘b’ is ‘ab’, and the number ‘b’ is increased by 1, by how much does the product increase?
(a) By 1
(b) By ‘a’
(c) By ‘b’
(d) By ‘a+b’

Answer: B

Question. In Step k, number of circles is given as k square plus.
(a) k
(b) 2k
(c) 3k
(d) 1

Answer: B

Question. Expansion of (6x + 5y) square is 36x square plus 60xy plus.
(a) 5y
(b) 10y
(c) 25y square
(d) y square

Answer: C

Question. In 23 times 27, if 27 is increased by 1, product increases by.
(a) 1
(b) 27
(c) 23
(d) 50

Answer: C

Question. If a is increased by m and b by n, increase will be.
(a) m + n
(b) mn
(c) an + bm + mn
(d) ab

Answer: C

Question. Identity 1C is a square minus b square equal to.
(a) (a + b) (a + b)
(b) (a - b) (a - b)
(c) (a + b) (a - b)
(d) a - b

Answer: C

Question. What is the simplified expansion of (a + b)(a + b)?
(a) a² + b²
(b) a² + ab + b²
(c) a² + 2ab + b²
(d) a² + ab + ba

Answer: C

Question. Identity 1 is (a + m)(b + n) equal to.
(a) ab + m + n
(b) ab + mb + an + mn
(c) a + b + m + n
(d) abmn

Answer: B

Question. Formula for a(b + c) is.
(a) ab + c
(b) a + bc
(c) ab + ac
(d) abc

Answer: C

Question. Two more than a square number is written as.
(a) s + 2
(b) (s + 2) square
(c) s square + 2
(d) 2s

Answer: C

Question. Method 1 for Step k circles uses (k + 1) square minus.
(a) 0
(b) 1
(c) k
(d) 2

Answer: B

Question. To find 104 square, we can use 100 plus.
(a) 1
(b) 2
(c) 3
(d) 4

Answer: D

Question. What is the pattern for the product of the sum and difference of two numbers, a² - b²?
(a) (a + b)²
(b) (a – b)²
(c) (a + b) × (a – b)
(d) a² + b²

Answer: C

Question. (a + b)(a + b) is.
(a) a square + b square
(b) a square + 2ab + b square
(c) 2a + 2b
(d) ab

Answer: B

Question. Identity 1C is.
(a) (a + b)(a - b) = a square - b square
(b) a + b = c
(c) a - b = d
(d) (a + b) square

Answer: A

Question. (k + 1)(k + 2) - (k + 3) will give result as.
(a) k square + 1
(b) 2
(c) k
(d) 0

Answer: A