To compare deals or scale up, you first find the unit rate (the cost or amount for one) by dividing, then multiply to get more. Warm up dividing-to-find-one and your times facts.
Answer these 3, then press Show my path. No grade — this just points you to the right level.
1. To find the cost of ONE item from a group price, you…
2. What is 15 ÷ 3?
3. What is 4 × 6?
First divide to find the amount for one (the unit rate). Then multiply that rate to find the amount for any number you want.
Your quick check picks one for you, but you can switch any time:
Level 0 Find the rate for one, then build up.
A. $6 for 3 pens → cost of 1 pen? (6 ÷ 3)
6 ÷ 3 = 2 dollars per pen.
B. If 1 pen is $2, how much for 2 pens? (2 × 2)
2 × 2 = 4 dollars.
C. How much for 5 pens at $2 each? (2 × 5)
2 × 5 = 10 dollars.
Level 1 Find a rate, then scale it.
A. $20 for 4 tickets → cost of 1 ticket? (20 ÷ 4)
20 ÷ 4 = 5 dollars per ticket.
B. At $5 per ticket, how much for 3 tickets? (5 × 3)
5 × 3 = 15 dollars.
C. Which is the BETTER deal?
Better deal = lower price for ONE. $2 is the cheapest.
Level 2 Full unit-rate problems.
A. 18 miles in 3 hours → miles per hour, then how far in 5 hours? (18 ÷ 3, then × 5)
18 ÷ 3 = 6 mph, then 6 × 5 = 30 miles.
B. $12 for 4 yogurts → price each, then cost of 7? (12 ÷ 4, then × 7)
12 ÷ 4 = 3 each, then 3 × 7 = 21 dollars.
1. $10 for 5 pens → cost of 1 pen? (10 ÷ 5)
10 ÷ 5 = 2 dollars per pen.
2. At $2 per pen, how much for 6 pens? (2 × 6)
2 × 6 = 12 dollars.
You've practiced exactly what Lesson 4-7 uses. Time to dive in.
Start Lesson 4-7 →