LCM

Find the HCF of 21 and 28

• 3
• 4
• 7
• 14

What is the LCM of 4 and 12? 

• 4
• 8
• 12
• 16

Find the HCF of 12 and 15 ?

• 2
• 2 x 3
• 3
• 60

What is the LCM of 6 and 8 ?

• 12
• 18
• 24
• 36

Which number is a multiple of 8? 

• 2
• 4
• 48
• 46

Find the least common multiple (LCM) of 3 and 7.

• 7

• 3

• 21

• 14

Find the least common multiple (LCM) of 9 and 5.

• 5

• 9

• 45

• 36

There are 40 girls and 32 boys who want to participate in 6th grade intramurals. If each team must
have the same number of girls and the same number of boys. What is the greatest number of teams that can participate in intramurals?

• 6
• 4
• 8
• 2

Two clocks are turned on at the same time. One clock chimes every 15 minutes. The other clock chimes every 25 minutes. In how many minutes will they chime together?

• 55 minutes
• 25 minutes
• 60 minutes
• 75 minutes

HCF OF TWO NUMBERS IS ALWAYS SMALLER THAN THEIR LCM

• TRUE

• FALSE