Making Change Sample Problems

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Here are some tips for Making Change, which aligns with Arizona state standards:

Making Change

To do this topic, you need to know both long addition and long subtraction.
To review the Long Addition topic, see here.
To review the Long Subtraction topic, see here.

What is "change"?
For example, you go to the toy store and buy a puzzle. The puzzle costs $3.50. If you pay with a $5 bill, you will get money back. Change is the money you get back.

Example 1: Subtraction

Calculate the correct amount of change. Sample answer: $3.78
1 pencil costs $0.58. You pay $5. How much change should you get back?
Use long subtraction to calculate the answer.

$5.00
- $0.58
$4.42 what you pay
- cost of the pencil
what you get back

The answer is

Example 2: Addition

Calculate the correct amount of change. Sample answer: $3.78
1 book costs $4.84. You want to receve 20 cents in change. How much money should you give?
Use long addition to calculate the answer.

$4.84
+ $0.20
$5.04 cost of the book
+ what you want to get back
what you should pay

The answer is