CBSE Class 8 Mathematics We Distribute Yet Things Multiply MCQs Set 09

Question. For a = 197 and b = 3, 197 square value is.
(a) 38800
(b) 38809
(c) 40000
(d) 194

Answer: B

Question. Tadang's method uses total area of.
(a) Circle
(b) Rectangle
(c) Square
(d) Point

Answer: C

Question. Minimum moves to flip 10 coins triangle is.
(a) 2
(b) 3
(c) 4
(d) 5

Answer: B

Question. 14 times 26 or 16 times 24, which is larger.
(a) 14 times 26
(b) 16 times 24
(c) Both equal
(d) Cannot say

Answer: B

Question. When one number ‘a’ is increased by ‘u’ and another number ‘b’ is decreased by ‘v’, what is the expanded product of (a + u)(b – v)?
(a) ab + uv
(b) ab – ub – av + uv
(c) ab + ub + av + uv
(d) ab + ub – av – uv

Answer: D

Question. Final value of 65 square is.
(a) 4000
(b) 4225
(c) 3625
(d) 4125

Answer: B

Question. Identity 1A, 1B, 1C are special cases of.
(a) Addition
(b) Distributive property
(c) Subtracting
(d) Counting

Answer: B

Question. Distributivity links multiplication and.
(a) Addition
(b) Division
(c) Counting
(d) Lines

Answer: A

Question. a square is equal to (a + b)(a - b) plus.
(a) ab
(b) b square
(c) 0
(d) a

Answer: B

Question. 35 × 75 = 2625. If 35 is increased by 1, the product will increase by
(a) 25
(b) 75
(c) 60
(d) 900

Answer: B

Question. Shaded region area by Tadang's method is (m + n) square minus.
(a) mn
(b) 2mn
(c) 4mn
(d) m square

Answer: C

Question. (a + b)c is same as.
(a) ac + bc
(b) ab + c
(c) a + b + c
(d) abc

Answer: A

Question. Value of 31 square using fast method is.
(a) 900
(b) 961
(c) 1000
(d) 310

Answer: B

Question. To find 104 square, we decompose 104 into sums of.
(a) Hard numbers
(b) Easy numbers
(c) Zeros
(d) Large numbers

Answer: B

Question. If a = 7 and b = 4, what is the value of (a + b)² + (a – b)² is
(a) 65
(b) 130
(c) 140
(d) 125

Answer: B

Question. Pattern 1 shows 2 times (a square + b square) equals.
(a) a square + b square
(b) (a+b) square + (a-b) square
(c) ab
(d) 2ab

Answer: B

Question. (a - b) square is called Identity.
(a) 1A
(b) 1B
(c) 1C
(d) 2

Answer: B

Question. In formula ac + ad + bc + bd, number of terms is.
(a) 1
(b) 2
(c) 3
(d) 4

Answer: D

Question. 65 square is equal to 60 square plus 5 square plus 2 times.
(a) 60 plus 5
(b) 60 minus 5
(c) 60 times 5
(d) 600

Answer: C

Question. What did Brahmagupta’s verse 12.55 state about breaking up the multiplier?
(a) The multiplier is broken up into two or more parts whose difference equals it.
(b) The multiplier is multiplied by each part of the multiplicand.
(c) The multiplier is broken up into two or more parts whose sum is equal to it; the multiplicand is then multiplied by each of these and the results added.
(d) The multiplier is squared, then added to the multiplicand.

Answer: C