Grade 3 Unit 7
Lesson 10: Problem Solving With Perimeter and Area
CC BY 2021 Illustrative Mathematics®
Grade 3 Unit 7
Lesson 10: Problem Solving With Perimeter and Area
CC BY 2021 Illustrative Mathematics®
Explain your reasoning.
Explain your reasoning.
Explain your reasoning.
Explain your reasoning.
Andre wants to know how much rope is needed to enclose the new rectangular school garden. The length of the garden is 30 feet. The width of the garden is 8 feet.
Clare says she can use multiplication to find the length of rope Andre needs.
Diego says he can use addition to find the length of rope Andre needs.
Who do you agree with? Explain or show your reasoning.
Your teacher will give you either a problem card or a data card. Do not show or read your card to your partner.
Solve the problem independently.
Your teacher will give you either a problem card or a data card. Do not show or read your card to your partner.
Solve the problem independently.
Lin is building a fence around her rectangular garden. A diagram is shown. The area of the garden is 36 square feet. How many feet of fencing material will she need to enclose the whole garden?