GCF and LCM

A full moon occurs every 30 days. If the last full moon occurred on a Friday, how many days will pass before a full moon occurs again on a Friday?

• 200 days

• 210 days

• 100 days

• 30 days

Find the LCM of 6 and 4

• 4

• 6

• 12

• 24

Find the LCM and GCF of 21 and 14. Answer Format: (LCM, GCF)

• (42,7)

• (21,14)

• (42,21)

• (21,7)

What is the LCM of 32, 40, 36?

• 1400

• 1440

• 400

• 40

If Miya goes to market every 2 days and Layla in every 3 days, and they went to the market at the same day, how many days will pass before they go at the market again at same day?

• 3 days

• 5 days

• 2 days

• 6 days

Two pieces of ribbon with a length of 63 inches and 42 inches, respectively, should be cut equally. Find the greatest length possible each ribbon will have.

• 12 inches

• 21 inches

• 42 inches

• 63 inches

Esmeralda gives a presentation in Davao every 9 days and in Tagum every 12 days. How often will she need to present in both cities on the same day?

• 30 days

• 12 days

• 16 days

• 36 days

The meaning of LCM is Least Common Mistake

• True

• False

Two wires with lengths of 45 cm and 50 cm are to be cut into pieces of all the same length without remainder. Find the greatest possible length of the pieces.

• 5 cm

• 10 cm

• 15 cm

• 20 cm

Find the LCm of 24, 32, 16

• 12

• 24

• 96

• 32