Worksheet: Estimating the Sum and Difference of Fractions by Rounding

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:

Estimate 110+15 by rounding each fraction to the nearest half.

  • A0
  • B2
  • C112
  • D1
  • E12

Q3:

Estimate 23+45 by rounding each fraction to the nearest half.

  • A112
  • B1
  • C2
  • D0
  • E12

Q4:

Olivia 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.

Q5:

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

  • A16
  • B18
  • C17
  • D19

Q6:

Noah ran 2 miles. He ran the first mile in 5710 minutes and the second mile in 613 minutes. By rounding each fraction to a whole number, estimate the time it took Noah to run the 2 miles.

  • A10 min
  • B14 min
  • C11 min
  • D13 min
  • E12 min

Q7:

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

Q8:

Chloe has saved $4,279 to pay for a vacation. She spends $1,115 on a hotel and $978 on flights.

First, estimate the amount she has left by rounding each number to the nearest hundred.

  • A$2,300
  • B$2,200
  • C$2,000
  • D$2,100
  • E$1,200

Find the exact answer. Use your estimate to check if your answer is reasonable.

  • A$2,186
  • B$2,168
  • C$2,201
  • D$2,179
  • E$2,164

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