CBSE Class 7 Mathematics Exponents and Powers MCQs

Question: A worm with some magic powers, grows to “a" times its own length each week. If its length is "a" cm now, five weeks from now its length will be:
(a) 5a cm
(b) a⁵ cm
(c) a⁶ cm
(d) 6a cm

Answer : C

Question: Which of the following can be written as (-2)³  ?
(a) - 2 x 3
(b) - (3 x 3)
(c) (-2) x (-2) x (-2)
(d) (-2) + (-2) + (-2)

Answer : C

Question: 2 + 3⁴ is equal to
(a) 625
(b) 83
(c) 66
(d) 14

Answer : B

Question: Which statement describes the expression p² - 7 correctly?
(a) Increase p by 2 and then subtract 7
(b) Multiply p by 2 and then take away 7
(c) Subtract 7 from a number and then double it
(d) Multiply p by itself and then take away 7

Answer : D

Question: Which of these can be expressed as a power of 5?
(a) 2² + 3²
(b) 5 + 5 + 5 + 5 +5 + 5
(c) 4 x 4 x 4 x 4 x 4
(d) (7 -  2) x (7 -  2) x (7 -  2)

Answer : D

Question: Which of the following is an even number?
(a) 5¹⁰
(b) 3¹²
(c) 2¹³
(d) 1¹⁰⁰

Answer : C

Question: Which of these can be expressed as 53?
(a) 2³ + 3³
(b) 5 + 5 + 5
(c) 3 × 3 × 3 × 3 × 3
(d) (7 - 2) × (7 - 2) × (7-2)

Answer : D

Question: Look at the figures below. In each figure, the number of dots and the number of small squares form a pattern. How many dots are needed to form 25 squares?

(a) 25
(b) 32
(c) 36
(d) 50

Answer : C

Question: Look at this solid. Which of the following can be folded up along the dotted lines to form the solid shown above?

Answer : B

Question: The above figure is rotated 900 clockwise. How will  look like after the rotation?

Answer : B

Question: Here is the picture of some houses.
What will be the result of rotating the above picture by 2700  in a clockwise direction?

Answer : B

Question: Whole numbers from 1 to 6 have to be written in the six empty boxes below should be between 2 and 5. 1 should be directly below 5 and directly to the left of 3. According to this, which number comes in the shaded box?

(a) 2
(b) 3
(c) 4
(d) 5

Answer : A

Question: Three of the cardboard cut-outs shown below form cubes when folded up along the dotted lines. Which cut-out does NOT form a cube when folded up?

Answer : C

Question: Which of the following statements is true about the edges meeting at corner X of the box shown below?

(a) 3 edges meet at X and each edge is perpendicular to exactly one of the other two.
(b) 4 edges meet at X, one pair of edges is perpendicular and the other parallel.
(c) 3 edges meet at X and each edge is parallel to the other two.
(d) 3 edges meet at X and each edge is perpendicular to the other two.

Answer : D

Question: Two views of a cube (with different markings on each face) are shown below: 
Which will be on the face opposite to   ?

Answer : B