C. 1/2. Convert 1/3 to sixths: 1/3 = 2/6. Then 1/6 + 2/6 = 3/6 = 1/2.

P4 Mathematics SA2 2020 — Rosyth | Singapore Past Year Paper

Q: In which of the following numbers does the digit 7 stands for 700?

C. 4730. In 4730, the digit 7 is in the hundreds place, so it represents 700. In 3074 it represents 70, in 3407 it represents 7, and in 7430 it represents 7000.

Q: 44 thousands and 3 tens is the same as ____.

D. 44 030. 44 thousands = 44 000, and 3 tens = 30. Adding: 44 000 + 30 = 44 030.

Q: 34 568 rounded to the nearest hundred is ____.

C. 34 600. The tens digit is 6 (≥5), so we round up the hundreds digit from 5 to 6, giving 34 600.

Q: Which one of the following has 1/5 of the figure shaded?

A. (Option 1). Option 1 shows a rectangle divided into 5 equal parts with 1 part shaded, representing 1/5 of the figure.

Q: In the number 35.61, the digit ____ is in the tenths place.

D. 6. The first digit after the decimal point is the tenths place. In 35.61, that digit is 6.

Q: Which two angles in the figure below are smaller than 90°?

C. ∠b and ∠e. From the figure, angles b and e appear to be acute angles (less than 90°), while c, d, and f appear to be obtuse (greater than 90°).

Q: The figure below is made up of 2 squares and 1 rectangle. How many right angles are there in the figure?

B. 12. Rectangle has 4 right angles, the larger square (rotated as diamond) has 4 right angles, and the smaller square inside has 4 right angles. Total = 4 + 4 + 4 = 12.

Q: The figure below is made up of a square PQRS and a square WXYZ. Find the sum of ∠QPS and ∠XYZ.

D. 180°. Since PQRS and WXYZ are both squares, ∠QPS = 90° and ∠XYZ = 90°. Therefore, ∠QPS + ∠XYZ = 90° + 90° = 180°.

Q: Tony is facing his home. He makes a 3/4 turn clockwise. He then made a 180° turn anticlockwise. Where is he facing now?

C. Supermarket. Tony faces home (south). 3/4 turn clockwise = 270° clockwise, so he faces east (school). Then 180° anticlockwise turn, so he faces west (supermarket).

Q1 MCQ 2 marks

In which of the following numbers does the digit 7 stands for 700?

Q2 MCQ 2 marks

44 thousands and 3 tens is the same as ____.

Q3 MCQ 2 marks

34 568 rounded to the nearest hundred is ____.

Q4 MCQ 2 marks 🖼 Visual

Which one of the following has 1/5 of the figure shaded?

Q5 MCQ 2 marks

1/6 + 1/3 = ____

Q6 MCQ 2 marks

In the number 35.61, the digit ____ is in the tenths place.

Q7 MCQ 2 marks 🖼 Visual

Which two angles in the figure below are smaller than 90°?

Q8 MCQ 2 marks 🖼 Visual

The figure below is made up of 2 squares and 1 rectangle. How many right angles are there in the figure?

Q9 MCQ 2 marks 🖼 Visual

The figure below is made up of a square PQRS and a square WXYZ. Find the sum of ∠QPS and ∠XYZ.

Q10 MCQ 2 marks 🖼 Visual

Tony is facing his home. He makes a 3/4 turn clockwise. He then made a 180° turn anticlockwise. Where is he facing now?

Q11 MCQ 2 marks 🖼 Visual

Which of the following dotted line in the figure does not show correctly the line of symmetry?

Q12 MCQ 2 marks 🖼 Visual

The table below shows the attendance of three classes of students in a week. If there are 40 students in each class, which day in the week were there most number of absentees for the three classes altogether?

Q13 MCQ 2 marks 🖼 Visual

The area of a square is 81 cm². Find its perimeter.

Q14 MCQ 2 marks

Kim's water bottle holds 1.8ℓ of water. Jake's water bottle holds 0.25ℓ less water than Kim's water bottle. How much water does Jake's water bottle hold?

Q15 MCQ 2 marks

Anna and Cindy had an equal amount of money at first. After Anna donated $40 and Cindy donated $160, she had 3 times as much money as Cindy. How much money did each girl have at first?

Q16 Open-ended 2 marks

What is the value of the digit 5 in 57 690?

Q17 Open-ended 2 marks

Fill in the blank with the correct number in the number pattern below. 850, 825, 800, ____, 750

Q18 Open-ended 2 marks

How many one-eighths are there in 1 whole?

Q19 Open-ended 2 marks

Find the value of 1 − 1/5 − 1/10.

Q20 Open-ended 2 marks

Write 6 thousandths as a decimal.

Q21 Open-ended 2 marks

Round 13.55 to the nearest whole number.

Q22 Open-ended 2 marks

Arrange these numbers from the smallest to the greatest. 0.414, 6.4, 0.604, 0.089

Q23 Open-ended 2 marks 🖼 Visual

Write the decimal represented by A.

Q24 Open-ended 2 marks

I am a number greater than 20 but less than 40. I am a multiple of 2 and a factor of 56. What number am I?

Q25 Open-ended 2 marks

Bus A arrives at a bus stop at every 9 minutes. Bus B arrives at the same bus stop at every 12 minutes. Both buses arrive at the bus stop at 1.00 p.m. When will these two buses arrive at the same bus stop at the same time again?

Q26 Open-ended 2 marks 🖼 Visual

WXYZ is a square. Find ∠x.

Q27 Open-ended 2 marks 🖼 Visual

Name the angle that is equal to 135°.

Q28 Open-ended 2 marks 🖼 Visual

Use a ruler to draw the line of symmetry in the figure below.

Q29 Open-ended 2 marks 🖼 Visual

How many more chocolate cupcakes were sold compared to the strawberry cupcakes?

Q30 Open-ended 2 marks 🖼 Visual

The cupcakes were sold at 4 for $9. How much was the sales of cupcakes on that day?

Q31 Open-ended 2 marks

The perimeter of a square room is 32m. What is the area of the square room?

Q32 Open-ended 2 marks

A rectangular floor measures 10m by 6m. It is covered with carpet at a cost of $150 per square metre. What is the cost of covering the whole floor?

Q33 Open-ended 2 marks 🖼 Visual

Rectangle D and square E have the same area. Find the perimeter of rectangle D.

Q34 Open-ended 2 marks

Alice was given $3 pocket money every day in the week. She spent $2.70 each day from Monday to Friday and saved the rest. She saved all her pocket money on Saturday and Sunday. How much money did she save in a week?

Q35 Open-ended 2 marks

Tim and Joel had a sum of money. Joel had 5 times as much money as Tim at first. After Joel spent $24.80, he had the same amount of money as Tim. How much money did Joel had at first?

Q36 Open-ended 2 marks

Mrs Lee had 3 red ribbons and 1 blue ribbon. The blue ribbon was 0.6m shorter than a red ribbon. The total length of the ribbons was 11.4m. How long was the blue ribbon?

Q37 Open-ended 3 marks

There were 81 pencils and 54 erasers to be packed into gift boxes. Each item is equally distributed and packed into the gift boxes. What was the greatest number of gift boxes that was packed?

Q38 Open-ended 3 marks

Nick sold 1/8 of his stickers and gave away 1/3 of it to John. What is the fraction of stickers left? Express your answer in the simplest form.

Q39 Structured 3 marks 🖼 Visual

The graph below shows the number of dengue cases from April to October. Study the graph carefully and answer the following questions. (a) Which month has the highest number of dengue cases? (b) What is the total number of dengue cases from Apr to Oct?

Q40 Open-ended 3 marks 🖼 Visual

The figure is made up of 6 identical squares. The area of one square is 64 cm². Find the length of the figure.

Q41 Open-ended 4 marks

There were five times as many apples as watermelons in a fruit stall. Each apple cost $1 and each watermelon cost $4. If the total cost of all the apples and watermelons was $108, how many apples were there in the stall?

Q42 Structured 4 marks

Don, Eric and Felix had 351 stamps. Felix had twice as many stamps as Don. Eric had thrice as many stamps as Felix. After Eric had given some stamps to Felix and Don, all of them had the same number of stamps. (a) How many stamps did Eric give to Felix? (b) How many stamps did Eric give to Don?

Q43 Open-ended 4 marks

A spider was climbing to the top of a garden wall. It started from the bottom of the wall and after climbing up 1/3 of the wall, it began to rain. During the rain, the spider slipped down 2m. When the rain stopped, the spider climbed up the remaining 7/9 of the height of the wall to reach to the top. Find the height of the wall.

Q44 Open-ended 4 marks

A teapot and a cup cost $29.75 together. Ashlyn paid $202.65 for 5 teapots and 12 cups. What is the cost of a cup?

P4 Mathematics SA2 2020 — Rosyth

Related papers