Unit 2, Lesson 15
Off the Line
Extra Support Materials for Algebra 1
15.1
Warm-up
How much does a nickel weigh?
- Record an estimate that is:
too low about right too high - Explain your reasoning.
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How much does a nickel weigh?
| too low | about right | too high |
|---|---|---|
Work independently on your column. Partner A completes the questions in column A only and partner B completes the questions in column B only. Your answers in each row should match. Work on one row at a time, and check whether your answer matches your partner’s before moving on. If you don’t get the same answer, work together to find any mistakes.
Solve each equation for .
| row | column A | column B |
|---|---|---|
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1 |
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2 |
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3 |
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4 |
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5 |
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6 |
Read each student’s reasoning, and answer the questions.
Jada says, “I know 4 nickels and 7 dollar coins weigh 76.7 grams. I know 4 nickels and 5 dollar coins weigh 60.5 grams. Here’s what else I can figure out based on that:
Priya says, “I know 9 plastic bricks and 3 number cubes weigh 39 grams, and 7 plastic bricks and 6 number cubes weigh 50.5 grams. Here’s what I can figure out based on that: