Primary 6 July Review 1

Transcription

1 Primary 6 July Review 1 50 Section A: 10 Questions, 15 marks Questions 1 to Questions 5 carry 1 mark each. Questions 6 to Questions 10 carry 2 marks each. Choose the correct answer and write it in the bracket provided. Calculators are not allowed in this section. 1. Round off to the nearest ten thousands. (1) (2) (3) (4) ( ) 2. Which of the following fraction has the largest value? (1) (2) (3) (4) ( ) 3. km = m (1) (2) (3) 2625 (4) ( ) 4. Which of the following is the same as 6070 ml? (1) 6 l 7 ml (2) 6 l 70 ml (3) 60 l 7 ml (4) 60 l 70 ml ( ) 1 P6/Jul/Review1

2 5. Which one of the following figures does not belong to the group? (1) (2) (3) (4) ( ) = 51 Which operations make the above number sentence correct? (1) + (2) + (3) (4) + ( ) 7. Mr Tan finished washing and polishing his car at 1.15 p.m. He took h to wash and h to polish his car. At what time did he start? (1) 9.40 a.m. (2) 9.54 a.m. (3) a.m. (4) a.m. ( ) 2 P6/Jul/Review1

3 8. The figure below is not drawn to scale. It is made up of 2 semicircles of different sizes. What is the perimeter of the shaded part in terms of π? 20 cm 20 cm (1) (10π + 20) cm (2) (20π + 20) cm (3) (30π + 20) cm (4) (40π + 20) cm ( ) 9. In the figure below, ABCE is a rectangle. ABD is an isosceles triangle. Find ABD. A B 40 E D C (1) 20 (2) 40 (3) 45 (4) 50 ( ) 10. Sally was facing south at the beginning of a game. Her classmates gave her some instructions to follow. Julie said, Make a turn clockwise. Then Amy said, Turn 135 anticlockwise. After making the 2 turns, which direction would Sally be facing? (1) Northwest (2) Northeast (3) Southeast (4) Southwest ( ) 3 P6/Jul/Review1

4 Section B: 10 Questions, 15 marks Questions 11 to 15 carry 1 mark each. Questions 16 to 20 carry 2 marks each. Show your mathematical statements clearly in the space provided and write your answers in the blank provided. No calculator is allowed in this section. 11. The sum of 4 consecutive odd numbers is 232. What is the largest of these 4 numbers? Ans: 12. = % Ans: % 13. Find the sum of and as a decimal. Ans: 4 P6/Jul/Review1

5 14. Find the perimeter of a rhombus of side 4 cm. Ans: cm 15. Ronnie spent of his money on a tie and of the remainder on a shirt. What fraction of his money was left? Ans: 16. Mr Lin s salary was $1850 last year. This year, his salary was increased to $1961. Find the percentage increase in his salary. Ans: % 5 P6/Jul/Review1

6 17. Raymond is travelling at an average speed of 78 km/h. How far does he travel in h? Ans: km 18. A rectangular container is 31 cm by 20 cm by 18 cm. Find the maximum number of 4-cm cubes that can be placed into the container. Ans: cubes 19. Marcus is 6 years old. His mother is 24 years older than he is. In how many years time will Marcus mother be 4 times as old as he is? Ans: years time 6 P6/Jul/Review1

7 20. Winston saved 40% of his salary every month. When Winston s salary was reduced by 10%, his savings became $1800. What was his salary at first? Ans: $ Section C: 6 Questions, 20 marks For Questions 21 to 26, show your steps in the space provided for each question and write your answers in the spaces provided. The marks for each question is shown in the [ ] at the end of the question. Calculators can be used in this section. 21. The pupils in class 6A caught a total of 80 spiders and beetles for a Science experiment. They counted that there were 262 more spider legs than beetle legs. How many spiders did the pupils catch? Ans: [2] 7 P6/Jul/Review1

8 22. of the visitors at the zoo were adults. There were 60 more children than adults. The ratio of the number of boys to the number of girls was 2 : 3. How many more girls than boys were at the zoo? Ans: [2] 23. Richard earned $3 for every box of chocolates he sold. He also received a bonus of $8 for every 15 boxes of chocolates he sold. How much money did he earn if he had sold 220 boxes of chocolates? Ans: [3] 8 P6/Jul/Review1

9 24. Mr Koh had a sum of money. He gave $1400 to his wife and spent $400 on an oven. He then gave of the remaining money to his 3 children. Given that each child received of Mr Koh s original sum of money, how much did each child receive? Ans: [4] 25. At 9 a.m., Jeffrey was cycling from point A to Point B. At the same time, Marianne was cycling from Town B to Point A, using the same route as Jeffrey. Cycling at a speed 4 km/h faster than Marianne, Jeffrey would pass Marianne 300 m away from the midpoint. (a) (b) What time did they pass each other? If Jeffrey took another 3 minutes to reach Point B, what time would Marianne reach Point A? Ans: (a) [2] (b) [2] 9 P6/Jul/Review1

10 26. A container measuring 100 cm by 50 cm by 30 cm was filled with water. A tap was turned on to fill it with water at a rate of 4 l/min. Every 15 seconds after the tap was turned on, a steel ball with a volume of 250 cm³ was added into the container. How many steel balls would be in the container when the water level reached the brim? Ans: [5] 10 P6/Jul/Review1