Primary 2 Math: Solve Fractions, Comparison and Time
Singapore Math Drills Team · 22 September 2026
At Primary 2, a child is learning to read relationships, not only calculate. Three useful skills are naming a fraction of a shape, understanding a “more than” comparison, and telling time to the nearest five minutes. Each one asks your child to notice a structure before choosing an operation or saying an answer.
On the free sample worksheet, your child meets a shaded equal-part model, a comparison story represented by bars, and a clock with several possible times. The aim is to make the reasoning visible: count equal parts, identify the known amount and the extra amount, then use the clock hands and five-minute intervals together.
Naming a fraction of a shape
What fraction of the bar is shaded?
A fraction tells us about equal parts of one whole. The denominator is the number of equal parts in the whole shape. The numerator is the number of those parts that are shaded. Keeping those jobs separate prevents a common mix-up.
- Count all the equal parts in the bar. There are 5 parts, so the denominator is 5.
- Count the shaded parts. There are 2 shaded parts, so the numerator is 2.
- Put the shaded count over the total count. The fraction is \frac{2}{5}.
- Read it as “two fifths”: two of five equal parts are shaded.
The word “equal” matters. If one section were wider than another, simply counting sections would not describe fair fractional parts. Ask your child to point to the whole first, then to the equal divisions, and only then to the shaded sections. That order builds the habit of checking what the denominator means.
You can also connect the picture to everyday sharing. If one sandwich is cut into five equal pieces and two pieces are taken, two fifths of the sandwich have been taken. The objects may change, but the fraction language stays the same: the whole is divided fairly, the bottom number names all equal parts, and the top number names the selected parts.
Common mistake: Writing 2/3 by counting two shaded parts and three unshaded parts. The denominator counts every equal part in the whole bar, not only the unshaded parts.
Try this at home: Fold a strip of paper into five equal sections, shade two, and ask your child to name the fraction before unfolding it.
Comparing with “more than”
Mei has 15 stickers. Jun has 6 more stickers than Mei. How many stickers does Jun have?
The phrase “6 more than Mei” means Jun has Mei’s amount plus an extra 6. A comparison bar makes it hard to lose that relationship: Jun’s bar starts the same length as Mei’s and extends by one extra piece.
- Draw or imagine Mei’s bar. It represents 15 stickers.
- Make Jun’s bar the same length as Mei’s bar first. That gives another 15 stickers.
- Add the extra part marked 6: 15 + 6 = 21.
- Jun has 21 stickers.
The order of the words is important. “More than” tells us to add the extra amount to the known quantity. The bar does not mean that the two children have the same number; it means Jun contains the whole Mei section plus one additional section. This is why a picture is often safer than jumping straight to an operation.
Contrast: If Jun had 6 FEWER stickers than Mei, the operation would change: 15 − 6 = 9. The word “more” and the word “fewer” describe opposite directions, so pause and identify the direction before calculating.
Common mistake: Adding 15 + 15 because both children are mentioned, or subtracting because the question compares two children. Look for the extra section: Jun’s amount is Mei’s amount plus 6.
Try this at home: Draw two bars for household objects and change the sentence between “5 more” and “5 fewer”, asking your child how the operation changes.
Telling time to 5 minutes
What time is shown on the clock? (MCQ 2:40 / 8:10 / 2:08)
For five-minute times, the long hand gives the minutes and the short hand tells us which hour we are in. Counting around the clock by fives is more reliable than trying to read the minute hand as a separate digit.
- Look at the short hand first. It is between 2 and 3, so the hour is 2-something, not 8-something.
- Start at 12 and skip-count by 5 as you move clockwise: 5, 10, 15, 20, 25, 30, 35, 40.
- The long hand is on the 8, which represents 40 minutes.
- Combine the hour and minutes: the answer is 2:40.
The answer choices show two realistic traps. 8:10 uses the long hand incorrectly as the hour. 2:08 treats the clock number 8 as eight minutes, but the clock face marks five-minute groups, so 8 means 40 minutes in this context. Encourage your child to explain the hand positions rather than relying on visual familiarity.
Common mistake: Reading the number 8 on the clock as 8 minutes. Say the five-times table around the face aloud until the child can connect each clock number with its minute value.
Try this at home: Set an analogue clock to different five-minute times and let your child walk a finger around the numbers while skip-counting by 5.
How Singapore Math Drills helps
Singapore Math Drills gives children visual questions, progressive hints, and step-by-step explanations after a wrong answer, so the reason behind an answer stays visible. Adaptive practice and targeted drills let a child revisit fractions, comparison, or time without having to repeat every topic. The skill map helps families see the next useful focus inside the MOE-aligned P1–P6 question bank. Practice can begin with the free tier and a no-credit-card trial, keeping the routine steady and calm.
Try one yourself
Ahmad has 18 marbles. Lina has 7 more marbles than Ahmad. How many marbles does Lina have?
Hint: Lina's bar is as long as Ahmad's bar plus an extra 7.
Try the free Primary 2 sample worksheet No sign-up or credit card is needed.
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