Hakim wants to buy a ruler that costs $1.50. He already has 2 fifty-cent coins. What is the LEAST number of ten-cent coins he still needs?
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Worked Solution
Step 1 Find the value of the 2 fifty-cent coins: 2 × 50¢ = 100¢ = $1.00.
Step 2 Find the remaining amount needed: $1.50 − $1.00 = $0.50 = 50¢.
Step 3 Find the number of ten-cent coins needed: 50¢ ÷ 10¢ = 5 coins.
Answer: Hakim needs at least 5 ten-cent coins.
Correct answer: 5
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