Math Drills
Subtracting Proper Fractions (Unlike Denominators)
C-3Word Problems
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What this worksheet covers
- Worksheet
- Subtracting Proper Fractions (Unlike Denominators)
The procedure of finding a common denominator and then subtracting one numerator from the other is made firm using only expressions whose answer settles into a proper fraction. Pairs whose difference can be written straight down mix with pairs to be simplified into lowest terms, Fill in the Blank keeps the denominator and turns one of the two numerators into a gap, and the word problems stay inside the same range.
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How Fill in the Blank is worked back depends on whether the gap stands on the side being subtracted from or the side being taken away. Subtract the two visible fractions as they stand and a question whose gap is the number being subtracted from yields no whole number that fits. Write the figure found back into the gap and subtract again, and any disagreement with the given difference shows plainly.
Calculation in the subtracting direction starts here. In Subtracting Unlike Improper Fractions the side being subtracted from passes 1, and the labor of tidying the answer into mixed-number form is added.
- Word Problems5 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 5/12L of water. You drank 4/15L. How much is left, in how many L? Answer □
Answer: 3/20L
(2)There was 1/3L of water. You drank 2/15L. How much is left, in how many L? Answer □
Answer: 1/5L
(3)There was 11/14kg of sugar. You used 5/18kg. How much is left, in how many kg? Answer □
Answer: 32/63kg
(4)There was 1/6L of oil. You drank 1/18L. How much is left, in how many L? Answer □
Answer: 1/9L
(5)There was 13/15L of juice. You used 1/6L. How much is left, in how many L? Answer □
Answer: 7/10L
What to do next
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