Olibits / Math / Fractions: Multiply & Divide
Primary 5 Math: Fractions: Multiply & Divide Practice
Real Primary 5 Math questions on Fractions: Multiply & Divide, pulled directly from the Olibits question bank — the same questions a child would actually see, not separately written for this page.
MOE strand: Number and Algebra
Curriculum alignment
Mathematics Syllabus, Primary One to Six (MOE, 2021 syllabus)
Taught across P1–P6.
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Real Fractions: Multiply & Divide practice questions
Kumar says 3/4 × 5 = 3/20 because he multiplied the denominator by 5 instead of the numerator. What is the CORRECT product?
6 2/3
15/4
3 3/4 ✓
3
To multiply a fraction by a whole number, multiply the numerator (not the denominator): 3/4 × 5 = (3 × 5)/4 = 15/4 = 3 3/4.
Halim says 2/3 × 4 = 4 because he multiplied 3 × 4 to get the numerator instead of 2 × 4, giving 12/3 = 4. What is the CORRECT product?
6
8/3
2
2 2/3 ✓
To multiply a fraction by a whole number, multiply the numerator (2), not the denominator: 2/3 × 4 = (2 × 4)/3 = 8/3 = 2 2/3, not 4.
Farah says 4/5 × 3 = 4/15 because she multiplied the denominator by 3 instead of the numerator. What is the CORRECT product?
2
2 2/5 ✓
12/5
3 3/4
To multiply a fraction by a whole number, multiply the numerator: 4/5 × 3 = (4 × 3)/5 = 12/5 = 2 2/5, not 4/15.
Priya says 1/2 × 2/5 = 3/7 because she added the numerators together and added the denominators together. What is the CORRECT product?
3/7
2/10
1 1/4
1/5 ✓
Multiplying fractions means multiplying numerators together and denominators together, not adding: (1 × 2)/(2 × 5) = 2/10, which simplifies to 1/5 - not 3/7.