Ages 9–10🧮 Mathematics9 verified questions on this shelf

Choosing representations strategically

Select and use tools and representations strategically: choose between mental methods, formal written methods, protractors, fraction strips, and diagrams based on the demands of the problem

Try three questions

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Question 1 of 3

Sam looks at angle XYZ drawn on a worksheet and thinks it looks about 70°. Which tool should Sam use to find out exactly how many degrees the angle is?

Question 2 of 3

Liam is constructing a small wooden ramp for his toy car. He draws the ramp and marks the angle where it meets the floor, estimating it to be about 30°. To be certain the angle is exactly 30° so the ramp is safe, which method should Liam choose and why is it the best choice?

Question 3 of 3

Sam needs to solve two multiplication problems: 25 × 40 and 347 × 26. Which pair of methods should he choose for the two problems?

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Skill names and descriptions include the Marble Skill Taxonomy © Generative Spark, Inc. (withmarble.com), licensed under ODbL 1.0 (database) and CC BY-SA 4.0 (content). Practice questions are GlowGrades's own, each checked by independent verifiers that must agree before a child ever sees it.