Go through the Math in Focus Grade 3 Workbook Answer Key Chapter 5 Practice 3 Real-World Problems: Addition and Subtraction to finish your assignments.

## Math in Focus Grade 3 Chapter 5 Practice 3 Answer Key Real-World Problems: Addition and Subtraction

**Solve. Draw bar models to help you.**

Example

Jake mixes 620 liters of water and 180 liters of syrup to make lemonade. He adds another 1 45 liters of water to the mixture. How much more water than syrup does he use for the lemonade?

620 + 145 = 785

He uses 765 liters of water.

785 – 180 = 585

He uses 585 liters more water than syrup.

**Solve. Draw bar models to help you.
**Question 1.

A pet store donates 3,500 pounds of dog food to an animal shelter. A farm donates 2,500 pounds of dog food at first. Later it donates another 2,000 pounds of dog food to the animal shelter. How many more pounds of dog food does the farm donate than the pet store?

Answer:

1000 more pounds of dog food the farm donates than the pet store.

Explanation:

Number of pounds of dog food to an animal shelter a pet store donates = 3,500.

Number of pounds of dog food to an animal shelter a farm donates first = 2,500.

Number of pounds of dog food to an animal shelter a farm donates later = 2,000.

Total number of pounds of dog food to an animal shelter a farm donates = Number of pounds of dog food to an animal shelter a farm donates first + Number of pounds of dog food to an animal shelter a farm donates later

= 2,500 + 2,000

= 4500.

Difference:

Total number of pounds of dog food to an animal shelter a farm donates – Number of pounds of dog food to an animal shelter a pet store donates

= 4500 – 3500

= 1000.