Cans of Paint

Brandon has 18 cans of paint to put on 3 shelves. Brandon puts 7 cans of paint on the first shelf. Brandon puts 5 cans of paint on the second shelf. How many cans of paint does Brandon put on the third shelf? Show all your mathematical thinking.

More Accessible Version

Brandon has 10 cans of paint to put on 3 shelves. Brandon puts 3 cans of paint on the first shelf. Brandon puts 5 cans of paint on the second shelf. How many cans of paint does Brandon put on the third shelf? Show all your mathematical thinking.

More Challenging Version

Brandon has 27 cans of paint to put on 4 shelves. Brandon puts 9 cans of paint on the first shelf. Brandon puts 7 cans of paint on the second shelf. Brandon puts 6 cans of paint on the third shelf. How many cans of paint does Brandon put on the fourth shelf? Show all your mathematical thinking.

Plan

Underlying Mathematical Concepts

Possible Problem-Solving Strategies

Formal Mathematical Language and Symbolic Notation

A student may independently select a printed number line, number chart, ten frames, graph paper, etc. as they work on a task.

Suggested materials

Engagement Image:

Teachers may project the image below to launch this task for their students, define nouns, promote discussion, access prior knowledge, and inspire engagement and problem solving.

Click image to enlarge

Possible Solutions

Solutions tabs

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