P4 Mathematics SA1 2021 — Rosyth | Singapore Past Year Paper

Q: In which of the following numbers does the digit 4 stand for 400?

D. 7489. In 7489, the digit 4 is in the hundreds place, so it stands for 400.

Q: What is the remainder when 8324 ÷ 7?

A. 1. 8324 ÷ 7 = 1189 remainder 1 (since 7 × 1189 = 8323, and 8324 − 8323 = 1).

Q: What fraction of the shapes in the box are smiley faces?

A. 4/9. The box has 9 shapes in total (5 black plus signs + 4 smiley faces). 4 out of 9 are smiley faces, so the fraction is 4/9.

Q: Which of the following figure is not symmetrical?

D. (Figure 4). A parallelogram (slanted four-sided shape) has no line of symmetry, while the other figures shown have at least one line of symmetry.

Q: The time now is 6 p.m. What time will it be if the minute hand moves 1/2 turn clockwise?

C. 6.30 p.m.. A 1/2 turn of the minute hand equals 30 minutes. 6.00 p.m. + 30 minutes = 6.30 p.m.

Q: ____ is a common factor of 14 and 35.

A. 7. Factors of 14: 1, 2, 7, 14. Factors of 35: 1, 5, 7, 35. The common factor among the options is 7.

Q: Isa has $3210. Jim has three times as much as Isa. How much do they have altogether?

D. $12 840. Jim has 3 × $3210 = $9630. Together: $3210 + $9630 = $12 840.

Q: How many one-fifths are there in 3 wholes?

D. 15. Each whole has 5 one-fifths, so 3 wholes = 3 × 5 = 15 one-fifths.

Q: Mrs Tan bought 1/3 kg of flour and Mrs Lee bought 1/4 kg of flour. How much flour did they buy altogether?

C. 7/12 kg. 1/3 + 1/4 = 4/12 + 3/12 = 7/12 kg.

Q: Which is the line of symmetry for the figure below?

C. Line EF. Line EF (the vertical line through the centre) divides the figure into two mirror-image halves, making it the line of symmetry.

Q1 MCQ 2 marks

In which of the following numbers does the digit 4 stand for 400?

Q2 MCQ 2 marks

What is the remainder when 8324 ÷ 7?

Q3 MCQ 2 marks

234 × 5 = ____

Q4 MCQ 2 marks 🖼 Visual

What fraction of the shapes in the box are smiley faces?

Q5 MCQ 2 marks 🖼 Visual

Which of the following figure is not symmetrical?

Q6 MCQ 2 marks 🖼 Visual

The time now is 6 p.m. What time will it be if the minute hand moves 1/2 turn clockwise?

Q7 MCQ 2 marks

____ is a common factor of 14 and 35.

Q8 MCQ 2 marks

Isa has $3210. Jim has three times as much as Isa. How much do they have altogether?

Q9 MCQ 2 marks

How many one-fifths are there in 3 wholes?

Q10 MCQ 2 marks

Mrs Tan bought 1/3 kg of flour and Mrs Lee bought 1/4 kg of flour. How much flour did they buy altogether?

Q11 MCQ 2 marks 🖼 Visual

Which is the line of symmetry for the figure below?

Q12 MCQ 2 marks 🖼 Visual

Muthu is standing at point X and is facing the library. He turns in an anti-clockwise direction and ends up facing the general office. What is the angle of his turn?

Q13 MCQ 2 marks

I am a multiple of 4. The digit in the ones place stands for 8. The digit in the tens place is 4 times the digit in the hundreds place. The digit 2 is in the thousands place. What number am I?

Q14 MCQ 2 marks

10 cones were placed at an equal distance apart in a straight line. The distance between the first and fourth cone is 36 m. Find the total distance between the first and last cone.

Q15 MCQ 2 marks

There were 54 biscuits in a tin. Both Peter and his brother ate 1/3 of the biscuits. Peter ate two times as many biscuits as his brother. How many biscuits did Peter eat?

Q16 Open-ended 2 marks

72 039 = 70 000 + 2000 + ____ + 9. What is the missing number?

Q17 Open-ended 2 marks

Round 46 909 to the nearest hundred.

Q18 Open-ended 2 marks 🖼 Visual

Find the missing digit in the box. 1357 × 6 = 8 ? 42

Q19 Open-ended 2 marks

Find the product of 349 and 62.

Q20 Open-ended 2 marks

What is the quotient when 6473 is divided by 9?

Q21 Open-ended 2 marks

Write 17/3 as a mixed number.

Q22 Open-ended 2 marks

Arrange 9/6, 1 1/6 and 2/3 in increasing order.

Q23 Open-ended 2 marks

Find the value of 5 − 2/3. Give your answer as a mixed number in the simplest form.

Q24 Open-ended 2 marks

Find the value of 2/5 of 55.

Q25 Open-ended 2 marks

A number is 12 000 when rounded to the nearest thousand. What is the greatest possible value of the number?

Q26 Open-ended 2 marks

What is the second common multiple of 3 and 5?

Q27 Open-ended 2 marks

A shirt and 3 pairs of pants cost $295. The shirt costs twice as much as each pair of pants. How much does a pair of pants cost?

Q28 Open-ended 2 marks

Dave and Eva had an equal number of beads. After Eva gave 39 beads to Dave, how many more beads did Dave have than Eva?

Q29 Open-ended 2 marks

There are 240 tarts in a box. 5/8 of them are mango tarts and the rest of them are durian tarts. How many durian tarts are there?

Q30 Open-ended 2 marks

Fiona had some stickers. She gave 4/9 of the stickers to her cousin. If she had given her cousin 32 stickers, how many stickers did she have at first?

Q31 Open-ended 2 marks

Mrs Tan had 5/6 m of ribbon. She cut away 1/2 m. What is the length of the ribbon left? Give your answer as a fraction in its simplest form.

Q32 Open-ended 2 marks

Zainul bought 16 curry puffs. He ate 3 curry puffs and gave 7 curry puffs to his friends. What fraction of the curry puffs had he left? Give your answer in its simplest form.

Q33 Open-ended 2 marks

Tom had $360. He gave 2/9 of it to charity. How much money had he left?

Q34 Open-ended 2 marks 🖼 Visual

How many line(s) of symmetry are there in the figure below?

Q35 Open-ended 2 marks 🖼 Visual

Name the angle that is equal to 55°.

Q36 Open-ended 2 marks

James had 1 kg of sugar. He used 3/8 kg of it to make some cookies and 1/4 kg of it to make cupcakes. How much sugar had he left?

Q37 Structured 3 marks

The difference between two numbers is 5052. The greater number is four times the smaller number. What is the greater number?

Q38 Structured 3 marks

Boon Wei saved $3270 in the past 11 months. He saved $204 each month in the first 5 months. He saved the same amount each month for the last 6 months. How much did he save each month in the last 6 months?

Q39 Structured 3 marks 🖼 Visual

Study the figures below. (a) Put a ✓ in the box if the figure is symmetric. [1] (b) Complete the figure below with XY as the line of symmetry. [2]

Q40 Structured 3 marks

There were two containers, A and B, which contained some sugar. There was 3/5 kg of sugar in Container A. There was 1/3 kg more sugar in Container A than Container B. What was the total amount of sugar in both containers?

Q41 Structured 4 marks

There were some beads in a box. 1/5 of the beads were red, 7/10 of them were blue and the rest were yellow. (a) What fraction of the beads were yellow? (b) If there were 45 yellow beads, how many red and blue beads were there altogether?

Q42 Structured 4 marks

Ali and David have a total of 196 coins. Ali and Susan have a total of 676 coins. Susan has five times as many coins as David. How many coins does Ali have?

Q43 Structured 4 marks

Ken had 450 more bookmarks than Lynn. After Lynn gave away 39 bookmarks, Ken had four times as many bookmarks as Lynn. How many bookmarks did Ken have?

Q44 Structured 4 marks

Timmy wanted to buy some pizzas and ice-cream for a party. One pizza cost $30 more than a tub of ice-cream. If Timmy bought 2 pizzas and 3 tubs of ice cream for $110, what was the cost of a pizza?

P4 Mathematics SA1 2021 — Rosyth

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