Primary 2 Mathematics Fractions Quiz

Primary 2 Mathematics Quiz - Fractions (Answer Key)

Name: _________________________ Class: _________________________ Date: _________________________ Score: ________ / 20

Section A: Shade the Correct Part (Questions 1 - 5)

1. Shade 1 part.

• Explanation: The rectangle is divided into 2 equal parts. $\frac{1}{2}$ means 1 part out of 2 equal parts. So, we shade 1 part.
• Marking: 1 mark for the correct number.

2. Shade 1 part.

• Explanation: The circle is divided into 4 equal parts. $\frac{1}{4}$ means 1 part out of 4 equal parts. So, we shade 1 part.
• Marking: 1 mark for the correct number.

3. Shade 2 parts.

• Explanation: The rectangle is divided into 3 equal parts. The numerator is 2, so we shade 2 parts out of the 3 equal parts.
• Marking: 1 mark for the correct number.

4. Shade 3 parts.

• Explanation: The square is divided into 8 equal parts. The numerator is 3, so we shade 3 parts out of the 8 equal parts.
• Marking: 1 mark for the correct number.

5. Shade 5 parts.

• Explanation: The rectangle is divided into 6 equal parts. The numerator is 5, so we shade 5 parts out of the 6 equal parts.
• Marking: 1 mark for the correct number.

Section B: Write the Fraction (Questions 6 - 10)

6. Answer: $\frac{1}{2}$

• Explanation: The circle is divided into 2 equal parts. 1 part is shaded. The fraction is shaded parts / total equal parts = $\frac{1}{2}$.
• Marking: 1 mark for the correct fraction.

7. Answer: $\frac{3}{4}$

• Explanation: The rectangle is divided into 4 equal parts. 3 parts are shaded. The fraction is $\frac{3}{4}$.
• Marking: 1 mark for the correct fraction.

8. Answer: $\frac{1}{3}$

• Explanation: The square is divided into 3 equal parts. 1 part is shaded. The fraction is $\frac{1}{3}$.
• Marking: 1 mark for the correct fraction.

9. Answer: $\frac{2}{8}$

• Explanation: The rectangle is divided into 8 equal parts. 2 parts are shaded. The fraction is $\frac{2}{8}$.
• Marking: 1 mark for the correct fraction.

10. Answer: $\frac{4}{6}$

• Explanation: The circle is divided into 6 equal parts. 4 parts are shaded. The fraction is $\frac{4}{6}$.
• Marking: 1 mark for the correct fraction.

Section C: Comparing and Ordering Fractions (Questions 11 - 15)

11. Answer: $\frac{1}{2}$

• Explanation: When comparing unit fractions (fractions with 1 as the numerator), the fraction with the smaller denominator is the bigger fraction. This is because the whole is divided into fewer parts, so each part is larger. $\frac{1}{2}$ is bigger than $\frac{1}{4}$.
• Marking: 1 mark for the correct answer.

12. Answer: $\frac{1}{5}$

• Explanation: When comparing unit fractions, the fraction with the bigger denominator is the smaller fraction. This is because the whole is divided into more parts, so each part is smaller. $\frac{1}{5}$ is smaller than $\frac{1}{3}$.
• Marking: 1 mark for the correct answer.

13. Answer: $\frac{1}{8}$, $\frac{1}{4}$, $\frac{1}{2}$

• Explanation: All are unit fractions. The bigger the denominator, the smaller the fraction. So, from smallest to biggest: $\frac{1}{8}$ (smallest), then $\frac{1}{4}$, then $\frac{1}{2}$ (biggest).
• Marking: 1 mark for the correct order.

14. Answer: $\frac{5}{8}$

• Explanation: These are like fractions (same denominator). To compare, we look at the numerator. The biggest numerator is 5, so $\frac{5}{8}$ is the biggest.
• Marking: 1 mark for the correct answer.

15. Answer: $\frac{5}{6}$, $\frac{4}{6}$, $\frac{2}{6}$

• Explanation: These are like fractions (same denominator). To order from biggest to smallest, we look at the numerators from biggest to smallest: 5, then 4, then 2.
• Marking: 1 mark for the correct order.

Section D: Adding and Subtracting Fractions (Questions 16 - 20)

16. Answer: $\frac{3}{4}$

• Working: $\frac{1}{4} + \frac{2}{4} = \frac{1+2}{4} = \frac{3}{4}$
• Explanation: When adding like fractions (same denominator), we add only the numerators. The denominator stays the same.
• Marking: 1 mark for the correct answer.

17. Answer: $\frac{7}{8}$

• Working: $\frac{3}{8} + \frac{4}{8} = \frac{3+4}{8} = \frac{7}{8}$
• Explanation: Add the numerators (3 + 4 = 7). The denominator stays the same (8).
• Marking: 1 mark for the correct answer.

18. Answer: $\frac{3}{6}$

• Working: $\frac{5}{6} - \frac{2}{6} = \frac{5-2}{6} = \frac{3}{6}$
• Explanation: When subtracting like fractions, we subtract only the numerators. The denominator stays the same.
• Marking: 1 mark for the correct answer.

19. Answer: $\frac{2}{5}$

• Explanation: The pizza is cut into 5 equal slices, so the denominator is 5. Tom eats 2 slices, so the numerator is 2. The fraction of the pizza Tom eats is $\frac{2}{5}$.
• Marking: 1 mark for the correct fraction.

20. Answer: $\frac{7}{10}$

• Working: $\frac{10}{10} - \frac{3}{10} = \frac{7}{10}$
• Explanation: The ribbon is cut into 10 equal pieces, so the whole ribbon is $\frac{10}{10}$. Mary uses 3 pieces, so we subtract $\frac{3}{10}$ from the whole. $\frac{10}{10} - \frac{3}{10} = \frac{7}{10}$. So, $\frac{7}{10}$ of the ribbon is left.
• Marking: 1 mark for the correct fraction.

END OF ANSWER KEY