Reviewing Number Concept

List the first 7 multiples of 13 !

• 13, 26, 39, 52, 65, 78, 91

• 13. 13, 26, 39, 51, 64, 77, 90

• 13, 26, 40, 53, 66, 79, 92

• 13, 26, 40, 52, 64, 78, 90

Here are five numbers :
80 ; 178 ; 336 ; 448 ; 480 ; 552

Group numbers that are not multiples of 16 !

• 80 ; 336 ; 448 ; 480

• 178 ; 336 ; 448

• 178 ; 552

• 80 ; 480

List all the factor of 48 !

• 1, 2, 3, 4, 6, 8, 12, 16, 24, 48

• 1, 2, 4, 6, 8, 12, 24, 48

• 1, 2, 6, 8, 24, 48

• 1, 2, 3, 6, 8, 18, 24, 48

Find the HCF of 24 and 72 !

Find LCM of 24 and 72 !

List the prime numbers between 100 and 130 !

• 101, 103, 107, 109, 111, 127

• 101, 103, 107, 111, 113, 127

• 101, 103, 107, 109, 113, 127

• 101, 103, 107, 109, 127

Find the product of prime factors and the cube root of 216 !

A diver 27 m below the surface of the water rises 16 m. At what depth is the then ?

• • + 11 m

• • - 11 m

• • + 43 m

• • - 43 m