Stretch: Decimals in Real Money Problems
I can solve multi-step problems that add, subtract, multiply, and divide decimals.
🧠 The Challenge
Real problems combine operations. Track the decimal point at every step
and ask: "Does my answer make sense?"
Worked example: 3 notebooks at $2.25 each, paid with $10. Cost = 3 × 2.25 = $6.75. Change = 10.00 − 6.75 = $3.25.
✏️ Your Turn
0 of 3 checks complete
1. 4 pens cost $1.20 each. What is the total cost?
2. You buy items for $7.45 and pay with $20. How much change?
3. A 2.5 kg bag of rice is split into 5 equal bowls. Each bowl holds…
💬 Explain Your Thinking
Walk through how you solved one problem, step by step:
"First I blank. Then I blank. My answer is blank, which makes sense because blank."