Worksheet for practicing subtraction to calculate change from purchases.

Let’s solve each problem one by one.

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Problem 1:
Francine spends $31.79 and pays with a fifty dollar bill ($50.00).
To find her change:
$50.00 - $31.79 = ?

Let’s subtract:

Start from the right:
- 0 - 9 → can’t do, borrow → 10 - 9 = 1 (but now we have to adjust the next digit)
Actually, let’s do it step by step:

$50.00
- $31.79
________

We can think of it as:

From $50.00, subtract $31 first → $19.00
Then subtract $0.79 → $19.00 - $0.79 = $18.21

Or directly:

50.00
-31.79
= 18.21

✔ So, Francine gets $18.21 in change.

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Problem 2:
Arthur’s bill is $14.23. He gives a twenty dollar bill ($20.00).
Change = $20.00 - $14.23

Calculate:

20.00
-14.23
______

Again, break it down:

$20.00 - $14.00 = $6.00
Then subtract $0.23 → $6.00 - $0.23 = $5.77

✔ So, the waiter brings back $5.77 in change.

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Problem 3:
D.W. buys popcorn for 98 cents. He gives a five dollar bill ($5.00).
Change = $5.00 - $0.98

Think:
$5.00 - $1.00 = $4.00, but since he only spent 2 cents less than $1, add 2 cents back → $4.00 + $0.02 = $4.02

Or directly:

5.00
-0.98
______
= 4.02

✔ So, the cashier gives $4.02 in change.

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Challenge Problem:
Brian buys two pieces of candy. Each costs $1.12.
Total cost = 2 × $1.12 = $2.24

He gives a ten dollar bill ($10.00)
Change = $10.00 - $2.24

Calculate:

10.00
- 2.24
______
= 7.76

✔ So, Brian’s change is $7.76

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Final Answer:
1. $18.21
2. $5.77
3. $4.02
Challenge: $7.76