NAME ______________________________ DATE _______________

HOMEWORK

More or Less?

Without actually solving each problem, decide whether the answer to each problem is more or less than the landmark numbers below each problem. Answer “yes” or “no” on the line next to each question.

• 1 28 × 4

  More than 100? _______________

  More than 200? _______________

• 2 30 × 13

  More than 300? _______________

  More than 600? _______________

• 3 26 × 43

  More than 500? _______________

  More than 1,000? _______________

  Less than 1,500? _______________

• 4 Choose one of the problems above and make a close estimate. Write about how you made your estimate, including what numbers you used to help you estimate.

NOTE

Students practice estimation strategies that include rounding to landmark numbers and using what they know about multiplication facts and multiplying by a multiple of 10.

MWI Multiplication Strategies: Breaking the Numbers Apart by Place

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