Math Drills

Subtracting 3 Fractions

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Word Problems

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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.

3 Terms (Word Problems, from a Proper Fraction)3 questions
3 Terms (Word Problems, from 1)2 questions

Questions & answers

Problems and answers on this worksheet

These are the problems in “Fraction Subtraction and Mixed Operations”, shown with their answers.

(1)There was 7/8L of oil. The 1st time, you used 1/3L, and the 2nd time, you used 1/8L. How many L are left? Answer □
Answer: 5/12L
(2)There was 7/8L of oil. The 1st time, you used 1/2L, and the 2nd time, you used 1/6L. How many L are left? Answer □
Answer: 5/24L
(3)There was 3/4L of milk. The 1st time, you used 1/2L, and the 2nd time, you used 1/5L. How many L are left? Answer □
Answer: 1/20L
(4)There was 1 L of milk. You drank 5/6L in the morning and 1/8L at noon. How many L are left? Answer □
Answer: 1/24L
(5)There was 1 L of water. The 1st time you used 1/6L, and the 2nd time you used 5/8L. How many L are left? Answer □
Answer: 5/24L

What to do next

Subtracting Proper Fractions (Unlike Denominators)Subtracting Proper Fractions (Unlike Denominators) Calculation

Next unit: Average

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