Standard Mathematics Primary 5 Fractions

Priya had 4 1/2 kg of sugar. She used 1 3/4 kg to bake cookies. How much sugar was left?

A 2 3/4 kg
B 3 1/4 kg
C 2 1/4 kg
D 3 3/4 kg
Show Worked Solution

Worked Solution

Step 1: Convert both mixed numbers to improper fractions. 4 1/2 = (4 × 2 + 1) / 2 = 9/2 1 3/4 = (1 × 4 + 3) / 4 = 7/4 Step 2: Find the lowest common denominator (LCD) of 2 and 4. LCD = 4 9/2 = 18/4 Step 3: Subtract the fractions. 18/4 − 7/4 = 11/4 Step 4: Convert back to a mixed number. 11 ÷ 4 = 2 remainder 3 11/4 = 2 3/4 Final answer: 2 3/4 kg Answer: 2 3/4 kg

Correct answer: 2 3/4 kg

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