Hannah brought $1 to buy ice cream at lunch. The ice cream only costs 65¢. How much change did she get back?
In this lesson, you will learn how to make change in money word problems by adding up on a number line.
Let’s Review Number Line More Less
Let’s Review
Let’s Review Friendly Numbers Friendly numbers are easy to work with.
10 +3 = = = 92
Core Lesson Matt takes a $20 bill to the store. He decided to buy a board game for $7. After he gives the cashier his money, how much change should he get back? What are the clues? What am I trying to figure out? ?
Matt takes a $20 bill to the store. He decided to buy a board game for $7. After he gives the cashier his money, how much change should he get back? Where is the money that he should get back? Is there a faster way to count the numbers?
Is there a faster way to count the numbers? Add up to the next friendly number! = 13 Matt got $13 back in change.
A Common Misunderstanding When we are making hops, we are counting the lines. When we are making hops, we are counting the spaces between the lines spaces $13
Core Lesson Hannah brought $1 to buy ice cream at lunch. The ice cream only costs 65¢. How much change did she get back? What are the clues? What am I trying to figure out? ?
Hannah brought $1 to buy ice cream at lunch. The ice cream only costs 65¢. How much change did she get back? $1 = 100¢ 65¢ Where should I put 100? 100¢
Core Lesson 65¢100¢ 70¢90¢80¢ Where is the change that she should get back? What number should I hop to first? Hop to the next friendly number! 5 What is the next friendly number? = spaces 35¢ Hannah got 35¢ back in change.
In this lesson you have learned how to make change in money word problems by adding up on a number line.