1.1 - Study Guide - Number Sense and Equivalent Forms

What is the Greatest Common Factor of 40 and 100?

• 20

• 10

• 5

• 1

What is the GCF of 15 and 20?

• 2

• 0

• 1

• 5

What is the Least Common Multiple of 3 and 13?

• 13

• 39

• 26

• 24

What is the Least Common Multiple of 4 and 7?

• 24

• 49

• 11

• 28

At Chick-Fil-A, the kitchen staff baked 36 chicken sandwiches and 108 spicy chicken strips. The staff had to prepare lunches for GDS. If each lunch will have the same number of sandwiches and strips, what is the greatest number of lunches they can make?

• 36

• 9

• 12

• 16

Maya had 16 red flowers and 24 yellow flowers.  She wants to make bouquets with the same number of each color flower in each bouquet.  What is the greatest number of bouquets that she can make?

• 4
• 2
• 48
• 8

If Maria runs every third day and swims every fifth day, what is the first day that she will both run and swim again? 

• 5
• 15
• 45
• 30

Two trains at a station have a different schedule. Train A leaves every 7 minutes and Train B leaves every 9 minutes. How many minutes will pass before they leave at the exact same time?

• 45 minutes

• 54 minutes

• 72 minutes

• 63 minutes

• 4