Lesson Worksheet: Estimating the Sum and Difference of Fractions by Rounding Mathematics • 5th Grade

In this worksheet, we will practice estimating the sum of or difference between two fractions or mixed numbers by rounding to the nearest half.

Q1:

Estimate 1011+17 by rounding each fraction to the nearest half.

  • A1
  • B2
  • C112
  • D0
  • E12

Q2:

By rounding each fraction to the nearest whole number, estimate the sum of 313, 4112, and 9811.

  • A16
  • B18
  • C17
  • D19

Q3:

By rounding each term to a whole number, estimate 723+4112.

Q4:

By rounding each term to a whole number, estimate 223114.

Q5:

Use the given number line to estimate the result of 525135 by rounding to a whole number.

Q6:

Estimate 225135 by rounding each fraction to the nearest half.

  • A0
  • B2
  • C1
  • D12
  • E112

Q7:

Round to the nearest half to estimate 5638.

  • A26
  • B12
  • C0
  • D28
  • E1

Q8:

Which subtraction gives an estimate of 1 when both terms are rounded to the nearest whole number?

  • A314235
  • B334214
  • C314114
  • D414214
  • E314214

Q9:

Which addition gives an estimate of 5 when both terms are rounded to the nearest whole number?

  • A213+123
  • B223+132
  • C223+232
  • D232+132
  • E323+132

Q10:

Chloe had a piece of cloth that was 2027 inches long. She shortened its length by 425 inches. Estimate the new length of the piece of cloth.

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