FACTORS, MULTIPLES AND PRIMES, HCF & LCM

Which number has a factor of 16?

• 258

• 112

• 596

• 452

Tags

CCSS.4.OA.B.4

Which number has 215 as one of its multiples?

• 40

• 15

• 43

• 25

Tags

CCSS.4.OA.B.4

The Lowest Common Multiple (LCM) of 24 and 60 is:

• 90

• 120

• 30

• 10

The Highest Common Factor (HCF) of 48 and 64 is:

• 14

• 8

• 4

• 16

Which number has a prime factor of 13?

• 78

• 87

• 93

• 43

Express 60 as a product of its prime factors.

• $4\ \times\ 15$
  

• $2^3\ \times\ 3^2$

• $\sqrt{9}\ \times\ \sqrt{16}\ \times\ \sqrt{25}$

• $2^2\ \times\ 3\ \times\ 5$

• $3600^{\frac{1}{2}}$

Express 150 as a product of its prime factors.

• $6\ \times\ 25$

• $2\ \times\ 3\ \times\ 5^2$

• $5^2\ \times\ 7$

• $2^2\ \times\ 3^2\ \times\ 5$

• $22500^{\frac{1}{2}}$

Find the Highest Common Factor (HCF) of 60 and 150.

• 15

• 6

• 10

• 60

• 30

Find the Lowest Common Multiple (LCM) of 60 and 150.

• 150

• 900

• 1000

• 600

• 300

Express 72 as a product of its prime factors.

• $2^7$

• $3^{3\ }\ \times\ 2^2$

• $2^{3\ }\times\ 3^2$

• $2^2\ \times3^2\ \times\ 5$

• $2^2\ \times\ 3\ \times\ 7$