Foundation Mathematics Primary 4 Fractions

Wei Lin had 11/12 m of ribbon. She used 1/6 m of it to wrap a gift. How much ribbon did she have left?

A 9/12
B 10/12
C 10/6
D 7/12
Show Worked Solution

Worked Solution

Step 1: Find the LCD of 12 and 6. LCD = 12. Step 2: Convert 1/6 to twelfths: 1 × 2 / 6 × 2 = 2/12. Step 3: Subtract: 11/12 − 2/12 = 9/12. Step 4: Wei Lin had 9/12 m of ribbon left.

Correct answer: 9/12

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