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Lesson 2-3

Lesson 2-3. Estimating Sums and Differences. Rounding. The process of replacing a number by another number that is close to the same value. What’s Our Rule for the Boss?. Using Rounding to Estimate Sums. 1,436+422= 1,436 rounds to 422 rounds to Now Estimate:.

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Lesson 2-3

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  1. Lesson 2-3 Estimating Sums and Differences

  2. Rounding The process of replacing a number by another number that is close to the same value. What’s Our Rule for the Boss?

  3. UsingRounding to Estimate Sums 1,436+422= 1,436 rounds to 422 rounds to Now Estimate:

  4. UsingRounding to Estimate Sums Estimate the sum using rounding 265 1,329 + 426 + 5,345 ______ _______

  5. UsingRounding to Estimate Differences 3,635-1,498= 3,635 rounds to 1,498 rounds to Now Estimate:

  6. UsingRounding to Estimate Differences Estimate the difference using rounding 562 9,245 - 223 - 4,033 ______ _______

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