Financial Literacy: Coin Combinations to 100 Cents
Warm-up
Show a handful of mixed coins. How do we count these efficiently? Students suggest strategies. Introduce sort-then-skip-count: sort by denomination, skip-count each group, add the subtotals. Practice with 2 examples together.
Explore
Coin combination challenge: each pair receives a total (e.g., 65 cents) and must find 3 different coin combinations that make that total. Record each. How many ways did you find? Is there a combination that uses the fewest coins? (Always use the largest coins possible.)
Consolidate
Practice
Students count 6 mixed coin combinations and record the total. Find 2 equivalent combinations for 50 cents and 75 cents. Solve a savings goal problem. Exit ticket: show two different ways to make 60 cents.
Exit ticket
Students count 6 mixed coin combinations and record the total. Find 2 equivalent combinations for 50 cents and 75 cents. Solve a savings goal problem. Exit ticket: show two different ways to make 60 cents.
2 quarters = 50 cents. 3 dimes = 30 cents. 2 nickels = 10 cents. 4 pennies = 4 cents. Total: 50 + 30 + 10 + 4 = 94 cents. Sorted by denomination and added subtotals.
0.85 = 2.15 more. Or: count up from 85 cents to 1.00 is 15 cents; 3.00 is 2.15. The adding-up strategy works for money just as for numbers.