Number Sense Activity

Anita is a fifth-grade student who has been described as having number sense. Drag the characteristics cards that describe a fifth-grader with number sense into the area labeled "Examples of Number Sense."

• She determined that her solution to a problem was reasonable.
• She needed an open number line to compare 165 and 118.
• She understands multiple ways to approach or solve a problem.
• She used mental math correctly to determine the sum of 1,241 and 382.
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• To determine a reasonable estimate for 510 × 9, she multiplied 500 by 9.
• She understands how to compose and decompose numbers to support mental math.
• She drew pictures of base ten blocks to solve 39 + 52.
• She decides which strategy or method to use based on the problem.
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• She understands the relative magnitude of a number.
• To solve the problem 23 × 12, she skip-counted by 12.
• She cannot explain why the standard algorithm produces an accurate answer when correctly applied.
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Examples of Number Sense 