Factors and Multiples and basic maths review

Factors and Multiples

100

_____________ of a number are 2 or more integers where their product is the number.

Factors

200

A _________________ number is a natural # > 1 that has only 1 and itself as factors.

PRIME

300

Write all the prime factors of 440

2 x 2 x 2 x 5 x 11

400

Write all the factors of 30X²Y

 2 x 5 x X x X x Y

500

Write prime factors of 2457

3 x 3 x 3 x 7 x 13

HCF

100

Find the HCF of 26 and 30

2

200

Find the HCF of 15 and 18

3

300

What is the HCF of 80 and 200

40

400

What is the HCF of 20 and 6 and 42

2

500

Two numbers have a LCM of 18 and a HCF of 3. What are they?

6 and 9

LCM

100

Find the LCM of 9 and 21

63

200

Find the LCM of 30 and 24

120

300

Find the LCM of 2 x 25 and 9 x 5 x 7  and 2 x 3 x 49

22050

400

3/10 + 1/6 + 7/15

14/15

500

What is the LCM of 4x and 10x²y

20x²y

Order of operations

100

SImplify 6 ÷ 2 - 3

0

200

Simplify 52 - 5 × 2

42

300

Simplify 25 ÷ 5 - 1

4

400

Simplify (9 - 9)² + 2 × 4

8

500

Simplify (9 - 5)² + 5 × 2

26