7GM Number Properties Quiz

• 5 + 5 + 5

• 5 x 5 x 5

• 3 + 3 + 3 + 3 + 3

• 3 x 3 x 3 x 3 x 3

Answer explanation

The 5 represents how many times does our base i.e., 3 multiplies by itself

• 8

• 10

• 6

• None of the above

• 3

• 4

• 5

• 6

• 16 x 7

• 9 x 23

• 23 x 23

• 16 x 23

The square root of 16 is

• 2

• 4

• 8

• 12

36 written as the product of its prime factors is

• 2 x 2 x 9

• 2 x 2 x 3 x 3

• 2 x 3 x 6

• 4 x 3 x 3

Answer explanation

The sum of the first three square numbers is

• 10

• 12

• 14

• 16

Answer explanation

1 + 4 + 9 = 14

• 2 + 2 + 2 + 2 + 2 + 2

• 2 x 2 x 2 x 2 x 2 x 2

• 6 + 6

• 6 x 6

Answer explanation

Base is 2 and index is 6, so 2 multiplies by itself 6 times.

The first prime number greater than 15 is

• 16

• 17

• 18

• 19

Answer explanation

Prime numbers are:
2, 3, 5, 7, 11, 13, 17, 19, 23, ...

The number of factors a prime number has is

• 1

• 2

• 3

• 4

Answer explanation

Prime numbers can only be divided by one and itself i.e., 2 factors.