P4 Mathematics SA2 2023 — Anglo Chinese | Singapore Past Year Paper

Q: In which of the following numbers does the digit 3 stand for 300?

D. 9360. In 9360, the digit 3 is in the hundreds place, so it stands for 300. In 6903 it stands for 3; in 9630 for 30; in 3690 for 3000.

Q: Which of the following is not an equivalent fraction of 1/4?

C. 5/16. 2/8 = 1/4, 3/12 = 1/4, 6/24 = 1/4. But 5/16 does not simplify to 1/4 (1/4 = 4/16, not 5/16).

Q: Which of the following decimals is the greatest?

A. 0.357. Comparing the tenths place: 0.357 has 3, 0.324 has 3, 0.068 has 0, 0.199 has 1. The two largest start with 0.3; comparing hundredths, 0.357 (5) > 0.324 (2).

Q: In the figure, which two lines below are perpendicular?

D. DE and CD. From the figure, the lines DE and CD meet at a right angle at vertex D, so they are perpendicular.

Q: Which of the following numbers when rounded to the nearest ten becomes 72 400?

B. 72 396. Rounded to the nearest 10: 72 349 → 72 350, 72 396 → 72 400, 72 405 → 72 410, 72 443 → 72 440. Only 72 396 rounds to 72 400.

Q: Express 0.05 as a fraction in its simplest form.

A. 1/20. 0.05 = 5/100 = 1/20 after dividing numerator and denominator by 5.

Q: In the figure, ABCD is a rectangle. Find ∠a.

A. 29°. Angle DAB of the rectangle is 90°. Two lines from A divide this 90° angle into three parts: 43°, a, and 18°. So a = 90° − 43° − 18° = 29°.

Q: The table shows the number of pets kept by a group of children. How many children have more than 1 pet?

D. 15. Children with more than 1 pet are those with 2, 3, or 4 pets: 5 + 8 + 2 = 15.

Q: A flight took off from Singapore at 22 50 and arrived in Taiwan at 04 05 the next day. How long was the flight?

A. 5 h 15 min. From 22:50 to 23:50 is 1 h. From 23:50 to 04:05 next day is 4 h 15 min. Total = 5 h 15 min.

Q: Which of the dotted line is a line of symmetry?

B. Vertical dotted line down the middle of an isosceles trapezium. An isosceles trapezium has only one line of symmetry, which is the vertical line passing through the midpoints of the two parallel sides. Only option 2 shows this.

Q1 MCQ 2 marks

In which of the following numbers does the digit 3 stand for 300?

Q2 MCQ 2 marks

Which of the following is not an equivalent fraction of 1/4?

Q3 MCQ 2 marks

Which of the following decimals is the greatest?

Q4 MCQ 2 marks 🖼 Visual

In the figure, which two lines below are perpendicular?

Q5 MCQ 2 marks

Which of the following numbers when rounded to the nearest ten becomes 72 400?

Q6 MCQ 2 marks

Express 0.05 as a fraction in its simplest form.

Q7 MCQ 2 marks 🖼 Visual

In the figure, ABCD is a rectangle. Find ∠a.

Q8 MCQ 2 marks 🖼 Visual

The table shows the number of pets kept by a group of children. How many children have more than 1 pet?

Q9 MCQ 2 marks

A flight took off from Singapore at 22 50 and arrived in Taiwan at 04 05 the next day. How long was the flight?

Q10 MCQ 2 marks 🖼 Visual

Which of the dotted line is a line of symmetry?

Q11 MCQ 2 marks 🖼 Visual

The table below shows the number of students in 3 CCAs in a class. Each student is in one CCA only. There are 38 students in the class. How many students are in Tennis CCA?

Q12 MCQ 2 marks 🖼 Visual

Which of the following statements about a rectangle is not correct?

Q13 MCQ 2 marks 🖼 Visual

The figure is made up of a square and a rectangle. What is the perimeter of the figure?

Q14 MCQ 2 marks

I am a multiple of 4. When 5 is added to me, I am a multiple of 7. What number am I?

Q15 MCQ 2 marks

There were 460 children at Sports Day Carnival. There were 140 more boys than girls. How many girls were there?

Q16 MCQ 2 marks 🖼 Visual

The figure below is made up of 5 identical squares. The area of each square is 36 cm². What is the perimeter of the figure?

Q17 MCQ 2 marks

Siti and Tina had the same number of beads at first. After Siti threw away 24 beads and Tina bought another 84 beads, Tina had 4 times as many beads as Siti. How many beads did Siti have at first?

Q18 MCQ 2 marks

A fruit seller had 30 boxes of pineapples. There were 24 pineapples in each box. He sold all the pineapples at 6 for $18. How much money did he receive?

Q19 MCQ 2 marks

Nancy and Peter bought a sofa. The sofa cost $1200. Nancy paid 3/8 of the cost of the sofa. How much more did Peter pay than Nancy?

Q20 MCQ 2 marks 🖼 Visual

The figure below is made up of 2 rectangles. What is the shaded area?

Q21 Open-ended 2 marks

Write the missing number in the number pattern below. 6649 , 6799 , 6949 , ____ , 7249

Q22 Open-ended 2 marks

Write 3 4/5 as an improper fraction.

Q23 Open-ended 2 marks

23.85 + 0.19 = ____

Q24 Open-ended 2 marks

Find the value of 6.84 × 7.

Q25 Open-ended 2 marks

What is the remainder when 1964 is divided by 8?

Q26 Open-ended 2 marks 🖼 Visual

Measure and write down the size of ∠x.

Q27 Open-ended 2 marks

Which two of the fractions below are in the simplest form? 2/3 , 3/6 , 4/8 , 5/9

Q28 Open-ended 2 marks

Arrange the following numbers from the smallest to the greatest. 3/4 , 0.705 , 0.075

Q29 Open-ended 2 marks

Two factors of 10 are 1 and 10. What are the other two factors of 10?

Q30 Open-ended 2 marks

Sumin took 45 min to walk from her home to school. She was 30 min early for the school concert. The concert started at 5 p.m. At what time did she leave her house? Give your answer in the 24-hour clock.

Q31 Structured 2 marks 🖼 Visual

The square grid below shows the plan of a school. (a) In what direction is the canteen from the hall? (b) The school wants to build a fitness corner. The location of the fitness corner is west of the library and south-east of the playground. Put a tick (✓) in the square where the fitness corner will be built.

Q32 Open-ended 2 marks 🖼 Visual

During which 1-hour interval was the decrease in the amount of water the greatest?

Q33 Open-ended 2 marks 🖼 Visual

The amount of water in the tank at 08 00 was 3 times the amount of water at 13 00. How much water was there in the tank at 13 00?

Q34 Open-ended 2 marks

There are 174 fruits in a basket. 1/3 are apples and the rest are pears. How many pears are there?

Q35 Open-ended 2 marks 🖼 Visual

Complete the figure below with XY as the line of symmetry.

Q36 Open-ended 2 marks 🖼 Visual

A rectangular pond, 14 m long and 6 m wide, has the same perimeter as a square plot of land. What is the length of one side of the square plot of land?

Q37 Open-ended 2 marks 🖼 Visual

The graph below shows the number of bags Mr. Tan sold from January to April. The bar for April is not drawn. Mr. Tan sold a total of 156 bags from February to April. What is the number of bags sold in April?

Q38 Open-ended 2 marks 🖼 Visual

The figure below is made up of 2 identical rectangles and a square. The total area of the 2 shaded rectangles is 64 cm². What is the length of the square?

Q39 Open-ended 2 marks

Siti had the same number of $2 and $5 notes. She had a total of $252. How many $2 notes did she have?

Q40 Open-ended 2 marks 🖼 Visual

In the figure, ABCD and EFGH are identical rectangles. The area of each rectangle is 112 cm². Find the shaded area.

Q41 Open-ended 4 marks 🖼 Visual

A stall had a promotion: Buy 1 muffin for $3 each, Buy 4 muffins at $11. Mandy bought 49 muffins. What was the least amount of money Mandy had to pay for the 49 muffins?

Q42 Structured 4 marks

James had $16.40. He wanted to buy 3 notebooks and 1 pencil case, but he was short of $3.30. (a) What was the total cost of the 3 notebooks and 1 pencil case? (b) The pencil case cost $2.90 more than each notebook. What was the cost of 1 notebook?

Q43 Structured 4 marks

Venus and Melvin were given some money. Venus spent 1/4 of her money and had $141 left. (a) How much did Venus spend? (b) Melvin spent two times as much as Venus. He had 2/3 of his money left. How much did Melvin have in the end?

Q44 Structured 4 marks

Sarah gives some erasers equally to her friends. If she gives 6 erasers to each friend, she will need another 4 erasers. If she gives 5 erasers to each friend, she will have 3 erasers left. (a) How many friends does Sarah have? (b) How many erasers does Sarah have?

Q45 Open-ended 4 marks

Lydia had twice as much money as Kenneth at first. Kenneth then gave Lydia $24. In the end, Lydia had 4 times as much money as Kenneth. How much money did Kenneth have at first?

P4 Mathematics SA2 2023 — Anglo Chinese

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