Let’s solve each problem one by one.
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Problem 1:
Johnson wants to make 1,500 toy cars.
He has already made 492.
So, how many more does he need to make?
→ 1,500 - 492 =
1,008
He can make 18 cars per day.
How many days will it take to make 1,008 cars?
→ 1,008 ÷ 18 =
56
✔ Check: 18 × 56 = 1,008 → Correct.
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Problem 2:
Bill and his 3 friends → that’s 4 people total.
Each read 55 books → 4 × 55 =
220 books total
Each book has 320 pages → 220 × 320
Let’s calculate:
220 × 320 = (200 + 20) × 320 = 200×320 + 20×320
= 64,000 + 6,400 =
70,400 pages
✔ Check: 220 × 320 = 70,400 → Correct.
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Problem 3:
Mary invited 14 friends → plus herself? The problem says “each person get at the party” — usually this includes the host unless specified otherwise. But let’s read carefully:
> “She wants to share them at her party but also wants to save 22 for her mother and father.”
So she saves 22 cookies → not for the party.
Total cookies: 190
Minus 22 saved → 190 - 22 =
168 cookies for the party
Now, who is at the party? She invited 14 friends. Does Mary count? The question says: “How many cookies will each person get at the party?”
In most such problems, if it says “invited 14 friends”, and doesn’t say “including herself”, we assume only the 14 friends are getting cookies — unless told otherwise. But let’s think: if Mary is hosting, she might be eating too. However, the problem says “share them at her party” — which likely means sharing with guests. Also, it says “each person get at the party” — ambiguous.
But look again: “She wants to share them at her party but also wants to save 22 for her mother and father.” → So the 22 are saved, not for the party.
The key is: “each person get at the party” — who is “each person”? The 14 friends? Or 14 friends + Mary?
In standard math problems like this, unless it says “including herself”, we usually assume only the invited guests are being shared with. But let’s check both ways.
Option A: Only 14 friends → 168 ÷ 14 =
12
Option B: 14 friends + Mary = 15 people → 168 ÷ 15 = 11.2 → not a whole number → unlikely for cookies.
Since cookies are whole items, and 168 ÷ 14 = 12 exactly, it’s safe to assume only the 14 friends are getting cookies.
✔ So answer is
12
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Problem 4:
Eli has 624 cards to give away.
He has 12 friends.
How many cards per friend? → 624 ÷ 12
Calculate:
12 × 50 = 600
624 - 600 = 24
12 × 2 = 24
So 50 + 2 =
52
✔ Check: 12 × 52 = 624 → Correct.
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Final Answers:
1. 56 days
2. 70,400 pages
3. 12 cookies
4. 52 cards
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Final Answer:
1. 56
2. 70400
3. 12
4. 52
Parent Tip: Review the logic above to help your child master the concept of word problems worksheet 5th grade.
