First, let’s explore all the pieces and bills that make up amounts to $100.
Cent Values (Up to $1)
| Piece | Value | Written As |
|---|---|---|
| Penny | 1 cent | $0.01 |
| Nickel | 5 cents | $0.05 |
| Dime | 10 cents | $0.10 |
| Quarter | 25 cents | $0.25 |
Bill Values (1to1_to_100)
| Bill | Value | Written As |
|---|---|---|
| $1 Bill | 1 dollar | $1.00 |
| $5 Bill | 5 dollars | $5.00 |
| $10 Bill | 10 dollars | $10.00 |
| $20 Bill | 20 dollars | $20.00 |
| $50 Bill | 50 dollars | $50.00 |
| $100 Bill | 100 dollars | $100.00 |
Counting Currency Math Up to $100
Example 1: Counting Centss
- 3 quarters = 75¢
- 2 dimes = 20¢
- 1 nickel = 5¢
- 4 pennies = 4¢ Total: 75¢ + 20¢ + 5¢ + 4¢ = $1.04
Example 2: Counting Bills
- 1 × 20=20=20
- 2 × 10=10=20
- 1 × 5=5=5
- 4 × 1=1=4 Total: 20+20+20 + 5+5+4 = $49
Example 3: Mixing Bills and Cents
- 1 × 50=50=50
- 1 × 20=20=20
- 3 × 1=1=3
- 2 quarters = 50¢ Total: 50+50+20 + 3+3+0.50 = $73.50
Currency Combinations to Make $100
There are many ways to make $100:
- 100 × $1 bills
- 20 × $5 bills
- 10 × $10 bills
- 5 × $20 bills
- 2 × $50 bills
- Or any combination (e.g., 1 × 50+2×20 + 1 × $10)
Practice Problems
- How many $5 bills make $100? Divide $100 by $5: 100 ÷ 5 = 20. So 20 five-dollar bills make $100.
- If you have 2 twenty-dollar bills and 3 ten-dollar bills, how much do you have? Multiply each: 2 × $20 = $40 and 3 × $10 = $30. Add: $40 + $30 = $70.
- What cents make 67¢ using the fewest pieces?
Answers:
- 20 bills
- $70
- 2 quarters (50¢), 1 dime (10¢), 1 nickel (5¢), 2 pennies (2¢)
Play “store” at home using real or pretend currency to practice counting different combinations!