Math Drills

Subtracting 3 Fractions

A-1

Calculation

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What this worksheet covers

Grade: Grade 5 (Elementary School)
Topic: Fraction Subtraction and Mixed Operations
Worksheet: Subtracting 3 Fractions

Calculation, Fill in the Blank and the word problems all take the same shape. The center is an expression taking two proper fractions in a row from a whole number such as 1 L or 1 m, and the side being subtracted from is sometimes a proper fraction. In Fill in the Blank the gap falls on the whole number or on one of the numerators, and it is recovered from the remaining figures and the answer.

When the side being subtracted from is a fraction as well, three denominators stand in the expression. Match only the two that catch the eye by their least common multiple and the remaining denominator will not divide evenly, yet the numerators get rewritten regardless. Checking one by one that the matched denominator divides evenly by every denominator in the expression catches it before any rewriting.

In Mixed Addition and Subtraction an addition joins the subtracting and expressions with parentheses appear. Two fractions to take away rather than one does not move the order of settling the denominator first and touching the numerators after.