Wei Lin had 7/8 m of cloth for a school badge-making project. She used 1/6 m of cloth to make one badge. How much cloth does she have left?
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Worked Solution
Step 1: Find the lowest common denominator (LCD) of 8 and 6.
8 = 2 × 2 × 2
6 = 2 × 3
LCM = 2 × 2 × 2 × 3 = 24
The LCD is 24.
Step 2: Convert each fraction to twenty-fourths.
7/8 = (7 × 3)/(8 × 3) = 21/24
1/6 = (1 × 4)/(6 × 4) = 4/24
Step 3: Subtract the fractions.
21/24 − 4/24 = 17/24
Wei Lin has 17/24 m of cloth left.
Correct answer: 17/24
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