Let's solve each problem step by step, showing all work and using proper labels.
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Problem 1: Text Messaging Cost
Question:
You are talking to your boyfriend/girlfriend who is overseas, and it costs you $0.35 for your first text message, and $0.08 for each additional text. If you have $0.75, how many times can you text?
Solution:
- First text costs: $0.35
- Remaining money after first text:
$0.75 - $0.35 = $0.40
- Each additional text costs $0.08
- Number of additional texts you can send:
$0.40 ÷ $0.08 = 5
- Total number of texts:
1 (first) + 5 (additional) =
6 texts
✔ Answer: You can send
6 text messages.
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Problem 2: Hamburger Quarter Pounders
Question:
You bought 5 pounds of ground hamburger meat. You want to make quarter pounders (that each weigh 0.25 of a pound). How many quarter pounders can you make?
Solution:
- Total meat: 5 pounds
- Weight per quarter pounder: 0.25 pounds
- Number of quarter pounders:
5 ÷ 0.25 = 20
✔ Answer: You can make
20 quarter pounders.
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Problem 3: Curtains and Pillows for Dollhouse
Part A:
There are 24 windows on the dollhouse and each window needs 3.75 inches of fabric for curtains. How much fabric do you need?
Solution:
- Fabric per window: 3.75 inches
- Number of windows: 24
- Total fabric needed:
24 × 3.75 = 90 inches
✔ Answer: You need
90 inches of fabric for curtains.
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Part B:
Your sister would also like little tiny pillows for her dolls. If you have 8 feet of fabric in all (there are 12 inches in a foot), how much do you have leftover for pillows?
Solution:
- Total fabric available: 8 feet
- Convert to inches:
8 × 12 = 96 inches
- Fabric used for curtains: 90 inches
- Fabric leftover:
96 - 90 = 6 inches
✔ Answer: You have
6 inches of fabric leftover for pillows.
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Problem 4: Brownie Recipe Sugar
Part A:
Your brownie recipe calls for 2.5 cups of sugar. You have 1.75 cups of sugar in your cabinet. How much more sugar do you need?
Solution:
- Sugar needed: 2.5 cups
- Sugar you have: 1.75 cups
- Additional sugar needed:
2.5 - 1.75 = 0.75 cups
✔ Answer: You need
0.75 cups more sugar.
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Part B:
Your neighbor has lent you 2 cups of sugar. Now, how much extra sugar do you have?
Solution:
- You now have: 1.75 (original) + 2 (from neighbor) = 3.75 cups
- Sugar needed: 2.5 cups
- Extra sugar:
3.75 - 2.5 = 1.25 cups
✔ Answer: You have
1.25 cups of extra sugar.
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✔ Final Answers Summary:
1.
6 text messages
2.
20 quarter pounders
3.
90 inches of fabric for curtains;
6 inches leftover for pillows
4. Need
0.75 cups more sugar initially; after borrowing, have
1.25 cups extra
All problems solved using addition, subtraction, multiplication, and division with decimals as required. Work shown clearly with units and labels.
Parent Tip: Review the logic above to help your child master the concept of mixed decimal operations worksheet.
