GCF & LCM
What is the LCM of 4 and 7?
Select all of the ratios that are equivalent to 9 : 6.
□ 3 : 2
□ 12 : 9
□ 18 : 12
□ 15 : 10
3:2 , 18: 12
Sam's favorite shade of purple uses a ratio of 3 cups red paint to 2 cups blue paint. If Sam bought 10 cups of blue paint, how much red paint will they need?
15 cups of red paint
A package of 6 granola bars costs $4.20. What is the cost per granola bar?
$0.70 each
A garden plan requires that for every 2 flower beds, there is 1 vegetable bed. If the garden has 9 vegetable beds, how many flower beds will it have?
18 flower beds
What is the GCF of 10 and 15?
5
The ratio of apples to oranges in a basket is 8 : 12. Which ratio is equivalent?
□ 4 : 6
□ 12 : 18
□ 16 : 20
4 : 6, 12 : 18
Jordan wants to make 30 cups of purple paint using the same ratio. How much of each color will they need?
18 cups red, 12 cups blue
A car travels 180 miles in 3 hours. What is the unit rate in miles per hour?
60 miles per hour
For every 4 pages of reading, a student writes 3 notes. If the student writes 12 notes, how many pages did they read?
16 pages
Determine the GCF of 18 and 27.
Simplify the ratio 21 : 14.
A store sells 5 pears for $3.50. How much would 15 pears cost?
$10.50
A student earns $30 after working 5 hours. How much do they earn per hour?
$6 per hour
A town rule says that for every 6 houses built, 2 plots of land must be used for parks. If there are 56 total plots, how many are used for houses?
42 plots for houses
Determine the LCM of 5 and 12.
60
Write a ratio equivalent to 5 : 9 that uses 45 as one of the terms.
25:45 or 45: 81
A sign says that 4 lemons cost $3.20. How much would 10 lemons cost?
$8.00
A store sells 3 pounds of grapes for $7.50. How much would 8 pounds cost?
$20.00
For every 3 students who buy lunch, 2 bring lunch from home. If there are 120 students total, how many buy lunch?
72 students
A student is saving up for a $90 concert ticket. For every 4 hours they work, they earn $36. How many hours do they need to work to earn $90?
10 hours
A company produces 120 toys in 8 hours. How many toys can it produce in 15 hours at the same rate?
225 toys