Square and Square Roots Quiz Grade 8

Find the smallest number by which 90 must be multiplied to get a perfect square number.

• 2

• 5

• 3

• 4

Find the smallest number by which 72 must be multiplied to get a perfect square number.

• 2

• 3

• 5

• 7

Find the smallest number by which 392 must be multiplied to get a perfect square number.

• 5

• 3

• 2

• 7

By which least number should 98 be divided to obtain a perfect square number?

• 7

• 5

• 3

• 2

By which least number should 245 be divided to obtain a perfect square number?

• 2

• 5

• 3

• 11

By which least number should 168 be divided to obtain a perfect square number?

• 2

• 3

• 7

• 42

The students of the class arranged a picnic. Each student contributed as many rupees as the number of students in the class. If the total contribution is ₹ 2025, find the strength of the class.

• 55

• 35

• 45

• 65

Find the least square number which is exactly divisible by each of the numbers 2, 3, 4, 6

• 36

• 16

• 25

• 49

Find the least number that should be subtracted from 1000 to obtain a perfect square.

• 37

• 36

• 39

• 32

Find the least number that should be subtracted from 9801 to obtain a perfect square.

• 2

• 1

• 0

• 4