Let’s solve each problem one by one, step by step.
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Problem 1:
James and four of his friends each have ½ of a bag of candy. How many bags of candy do they have in total?
→ First, count how many people there are: James + 4 friends =
5 people.
→ Each person has ½ bag.
→ So we multiply: 5 × ½ = 5/2 =
2½ bags.
✔ Final answer for #1:
2½
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Problem 2:
Moses eats ⅔ of a sushi roll for lunch for three days in a row. How much sushi did he eat during those three days?
→ He eats ⅔ each day, for 3 days.
→ Multiply: 3 × ⅔ = (3×2)/3 = 6/3 =
2 whole sushi rolls.
✔ Final answer for #2:
2
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Problem 3:
Rick has 8 glass bottles that are ¾ filled with ketchup. If he pours all of the ketchup together, how many of the glass bottles can he fill completely?
→ Each bottle is ¾ full → so total ketchup = 8 × ¾ = (8×3)/4 = 24/4 =
6 full bottles worth of ketchup.
→ That means he can fill
6 bottles completely.
✔ Final answer for #3:
6
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Problem 4:
There are 15 people at a pizza party. If each person eats ¹⁄₁₀ of a pizza, how many pizzas will be needed to feed everyone at the party?
→ Each person eats ¹⁄₁₀ → 15 people × ¹⁄₁₀ = 15/10 = ³⁄₂ =
1½ pizzas.
Wait — let’s double-check:
15 × ¹⁄₁₀ = 15 ÷ 10 = 1.5 → yes, that’s 1½.
But wait — does “how many pizzas will be needed” mean we need to round up? Because you can’t serve half a pizza if you’re ordering whole ones? Let’s read again:
It says “how many pizzas will be needed to feed everyone”. Since each person only eats ¹⁄₁₀, and 15 × ¹⁄₁₀ = 1.5, then technically
1.5 pizzas are eaten. But maybe the question expects us to give the exact amount consumed, not rounded up.
Looking back at other problems — they all expect exact fractional answers unless specified otherwise. Also, Problem 1 gave 2½, which is fine.
So we’ll go with
1½.
✔ Final answer for #4:
1½
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Problem 5:
Jeanie is a baker. She uses ¼ of a bag of cocoa powder to make one dozen cupcakes. How many bags of cocoa powder will she need if she wants to make 10 dozen chocolate cupcakes?
→ For 1 dozen → ¼ bag
→ For 10 dozen → 10 × ¼ = 10/4 = ⁵⁄₂ =
2½ bags
✔ Final answer for #5:
2½
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Final Answer:
1.) 2½
2.) 2
3.) 6
4.) 1½
5.) 2½
Parent Tip: Review the logic above to help your child master the concept of 4th grade problem solving worksheet.
