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Estimate sums and differences by rounding: up to 1,000

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Estimate sums and differences by rounding: up to 1,000 — free printable Grade 3 math worksheet

This worksheet helps students practice estimating sums and differences by rounding numbers up to 1,000. Teachers can use it to reinforce rounding skills and improve mental math strategies in addition and subtraction. Ideal for Grade 3 classrooms focusing on number sense and estimation techniques.

Learning objectives

  • Round numbers up to 1,000 to the nearest ten or hundred
  • Estimate sums by rounding addends before adding
  • Estimate differences by rounding minuends and subtrahends before subtracting

How to use this worksheet

  1. Select “Sign in / Sign up to download”, then sign in with Google or email to get the PDF from KiwiBee Printables.
  2. Print at home or in class for Grade 3; it's no-prep, with no extra materials needed.
  3. Hand it out as classwork, homework, or a quick warm-up.

Good for

ClassworkHomeworkWarm-upCentersSmall groups

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