1. James and four friends make 5 people total. Each has 2/5 of a bag. So, 5 × (2/5) = 10/5 = 2 bags total.
2. Moses eats 2/3 of a sushi roll per day for 3 days. So, 3 × (2/3) = 6/3 = 2 sushi rolls total.
3. Rick has 8 bottles, each 3/4 full. Total ketchup = 8 × (3/4) = 24/4 = 6 full bottles. So he can fill 6 glass bottles completely.
4. 15 people each eat 3/16 of a pizza. Total pizza needed = 15 × (3/16) = 45/16 = 2 13/16 pizzas. Since you can’t have a fraction of a pizza in practice, you need to round up to 3 pizzas.
5. One dozen cupcakes needs 1/2 bag of cocoa powder. For 10 dozen, she needs 10 × (1/2) = 10/2 = 5 bags of cocoa powder.
Parent Tip: Review the logic above to help your child master the concept of math worksheet for 4th grade word problems.