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Home > CC1 > Chapter 4 > Lesson 4.1.3 > Problem 4-35

4-35.

Estimate each sum or difference below by stating which whole numbers the answer should be between. Then check your conclusion by calculating the actual sum or difference. Homework Help ✎

  • About how big should their difference be? Estimate by first subtracting 2 from 5 and then subtracting 2 from 6.

  • To estimate the difference, try rounding the first term to 25 and the second term to 18.

  • To calculate the sum, you may want to convert these mixed numbers into fractions greater than one before adding.

  • The answer should be between 6 and 7.
    How can you tell?

  • Since each of these have a portion just over one-half, try rounding one up to the nearest whole number and rounding the other one down.