Enter 2 fractions below:

<-- Enter Fraction 1
<-- Enter Fraction 2
Round to nearest 1/2
Round to nearest 1/4
Round to nearest 1/8
      

Estimate the difference to the nearest 1/8

3
4
-
  
1
2

Estimate 3/4 with 1/8 as a benchmark:

Display the fraction bar for 3/4

The range is [5/8, 6/8]
The halfway point is denoted below:
1
2
*
  
(5 + 6)
8

1
2
*
  
11
8

11
16

Therefore, our range is 5/8 < 11/16 < 6/8

Compare our fraction to the mid point

3/4 ≥ 11/16, we round up to 6/8

Estimate 1/2 with 1/8 as a benchmark:

Display the fraction bar for 1/2

The range is [3/8, 4/8]
The halfway point is denoted below:
1
2
*
  
(3 + 4)
8

1
2
*
  
7
8

7
16

Therefore, our range is 3/8 < 7/16 < 4/8

Compare our fraction to the mid point

1/2 ≥ 7/16, we round up to 4/8

Estimating, we have 6/8 - 4/8

Our estimated answer is 2/8

Display the fraction bar for 2/8

2/8


You have 2 free calculationss remaining



2/8


What is the Answer?
2/8
How does the Benchmark Fractions Calculator work?
Free Benchmark Fractions Calculator - Adds or Subtracts or Compares 2 fractions using estimating sums or estimating differences with benchmark fractions.
This calculator has 2 inputs.

What 2 formulas are used for the Benchmark Fractions Calculator?

Find a Range
Compare to the halfway point

For more math formulas, check out our Formula Dossier

What 8 concepts are covered in the Benchmark Fractions Calculator?

benchmark
benchmark fractions
common fraction that gives you a reference to measure other fractionswith
compare
estimate, measure, or note the similarity or difference between
denominator
The bottom portion of a fraction. For a/b, b is the denominator
difference
the result of one of the important mathematical operations, which is obtained by subtracting two numbers
fraction
how many parts of a certain size exist
a/b where a is the numerator and b is the denominator
numerator
the number above the line in a common fraction
sum
the total amount resulting from the addition of two or more numbers, amounts, or items
Example calculations for the Benchmark Fractions Calculator

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