Q1. What is the angle for a fraction of one quarter in a pie chart?
✔ Multiply one quarter by three hundred sixty degrees to get ninety degrees.
Q2. If the total bill is thirty dollars and Siti pays one third, how much does she pay?
✔ Divide thirty dollars by three to find the value of one part.
Q3. If Wei Ming spends half his money at a hawker centre, what fraction remains?
✔ Subtract one half from the whole to find the remaining fraction.
Show transcript
[Slide 1] Understanding Pie Charts
Think of a pizza or a shared lunch bill at Tampines Hawker Centre. The whole circle represents the total amount. Each slice shows how much each person pays.
[Slide 2] Connecting Fractions and Angles
To find the angle, multiply the fraction by three hundred sixty degrees. We also use the bar model to compare values easily. This helps solve complex PSLE questions accurately.
[Slide 3] Siti and Ravi's Lunch
Siti and Ravi eat at a food court near MRT. Siti pays one-third, while Ravi pays the rest. The total bill is twenty-four dollars.
[Slide 4] Solving with Bar Model
Draw a bar model with three equal parts for the total. Divide twenty-four dollars by three to find one part. Siti pays eight dollars for her meal.
[Slide 5] Avoiding Common Errors
Students often forget that all fractions must add up to one whole. Check your angles sum to three hundred sixty degrees. Double check your division before multiplying.
[Slide 6] Key Takeaways
Remember that fractions show parts of the total circle. The bar model helps you see the relationship clearly. Keep practising with Singapore dollar questions.