CBSE Class 7 Mathematics Finding the Unknown MCQs Set G

Question. In equation 2n + 1 = 99, the 99 is on.
(a) LHS
(b) bottom
(c) RHS
(d) middle

Answer: C

Question. Sum of three digits is 15. Hundred's digit is 3 less than ten's. Ten's is 3 less than unit's. Number is.
(a) 369
(b) 258
(c) 147
(d) 456

Answer: B

Question. Modern notation 2x + 1 in ancient India was.
(a) x 2 1
(b) yā 2 rū 1
(c) rū 2 yā 1
(d) 2x + 1

Answer: B

Question. To remove divisor 15 in u / 15 = 6, we should.
(a) add 15 to other side
(b) multiply other side by 15
(c) subtract 15
(d) divide by 6

Answer: B

Question. If 11y = 66, then y = 66 / 11. This is using.
(a) inverse operation
(b) wrong math
(c) addition
(d) guessing

Answer: A

Question. If 5s = 3s, then s value is.
(a) 2
(b) 5
(c) 3
(d) 0

Answer: D

Question. Full form of LHS in equation is.
(a) Low Hand Side
(b) Left Hand Side
(c) Light Hand Side
(d) Left Hand State

Answer: B

Question. Algebra is powerful because it helps to.
(a) solve puzzles only
(b) generalise patterns
(c) make math difficult
(d) count sticks one by one

Answer: B

Question. Sign used in every equation is.
(a) plus
(b) minus
(c) equal to
(d) multiply

Answer: C

Question. Brahmagupta taught how to add and multiply.
(a) only zeros
(b) unknown numbers using letters
(c) horses only
(d) snack plates

Answer: B

Question. If Jahnavi saves ₹650 every month, her total savings after m months is.
(a) 650 + m
(b) 650 × m
(c) 4000
(d) 650

Answer: B

Question. If Sunita saves ₹500 every month, her savings after m months is.
(a) 5050
(b) 500
(c) 500 × m
(d) 500 + m

Answer: C

Question. Juice cost is ₹15 less than milkshake. If milkshake is m, juice cost is.
(a) m + 15
(b) m - 15
(c) 15m
(d) 15 - m

Answer: B

Question. In 4x - 4 = 24, moving -4 to the other side makes it.
(a) –4
(b) +4
(c) zero
(d) 8

Answer: B

Question. Making the same change on both sides of equation.
(a) breaks it
(b) maintains equality
(c) is wrong
(d) makes it zero

Answer: B

Question. The goal of solving is to make LHS equal to.
(a) zero
(b) RHS
(c) LHS
(d) 100

Answer: B

Question. If 15 = 19 - 4x, then the value of 4x is.
(a) 34
(b) 4
(c) 15
(d) 19

Answer: B

Question. If 300 + 6x = 10x - 100, then 400 is equal to.
(a) 16x
(b) 4x
(c) 100x
(d) 6x

Answer: B

Question. In equation 2y = 14, value of y will be.
(a) 12
(b) 16
(c) 7
(d) 28

Answer: C

Question. Modern way 3x + 4 = 2x + 8 in ancient Indian way is.
(a) x 3 rū 4 = x 2 rū 8
(b) yā 3 rū 4 yā 2 rū 8
(c) 3x + 4
(d) rū 3 yā 4

Answer: B