What this worksheet covers
Making change is subtraction with money. Each problem gives a cost in dollars and cents, up to just under the amount paid, and the amount paid, which is $5, $10 or $20. The student finds the change. Since the cost is a price with cents, most problems need regrouping across the decimal point, which is where the real mathematical work is.
Who it is for
Third and fourth grade. It applies the decimal subtraction students meet in fourth and fifth grade to a real situation, and it is the kind of money problem that turns up on state tests and in shops. Students should be able to subtract three-digit numbers and understand dollars and cents as a decimal.
Finding change from $5, $10 or $20 · grades 3 and 4
A worked example
Cost $3.65, paid $5.00. Count up from the cost: 35 cents gets to $4.00, and 1 dollar more gets to $5.00. The change is $1.35. Subtracting gives the same answer: 5.00 − 3.65 = 1.35.
Mistakes to watch for
- Subtracting the smaller digit from the larger in each column, which gives the wrong cents. Counting up avoids the borrowing.
- Forgetting the decimal point in the answer. Ask whether the change could be hundreds of dollars.
Make it your own
This sheet is one setting of the math worksheet generator. Open it there to change the skill, the range of numbers or the heading, or to mix several skills on one sheet.