P5Maths(新加坡小学5年级数学练习英文版)

1、CHAPTER 1 WHOLE NUMBERSNumber notation and place values up to 10 millionApproximation and estimationMultiplication and division of numbers up to 4 digits by a 2-digit whole numberOrder of operations1. Round off 69 570 km to the nearest 1 000 km.2.3. Round off 7 534 089 to the neatest thousand.4.5. A

2、 school s population is 2 904. Round off this number to the nearest thousand.6. The value of the digit 8 in 980 036 is7. What is the sum of the fourth multiple of 8 and the sixth multiple of 48. What is 100 tens less than 1 million9. What is 90 hundreds more than 1 million10. How many tens are there

3、 in 48 20011. There are hundreds in 1 million.12. The value of the digit 8 in 487 543 is 8 x13. Write nine million, six hundred and seven thousand and eighty-four in figures.14. Write five hundred and seven thousand and thirty-three in numerals.15. Evaluate (Solve) 507 x 28.16. The product of two nu

4、mbers is 9 570. If the smaller number is 58, what is the bigger number17. The sum of two numbers is 180. The difference between the two numbers is 26. Find thelarger number.18. Find the value of 85 + 10 x (80- 60 ) + 4.19. Find the value of 42 + (139- 19) + 6 x 2.20. 162 x 15 = 162 x 10 + ()What is

5、the missing number in the box21. What is the remainder when 2020 is divided by 822. When Sarah opens a book, the sum of the facing page numbers is 273. What is the smallerpage number23. Roy and Lin had the same amount of money. When he spent four times as much as Lin, he had$22 left while she had $4

6、9 left. How much did Lin have at first24. There are tens in 1 million.25. The value of 9 in 129 300 is26. Write 1 489 311 in words:find the mass of 3 such papayas.CHAPTER 3 STATISTICSLine graphs (Reading , interpreting and solving problems)CHAPTER 4 GEOMETRYAngles on a straight line, angles at a poi

7、nt, vertically opposite angles8-point compassProperties of a parallelogram, rhombus, trapezium, and triangleGeometrical construction: Draw a square, rectangle, parallelogram, rhombus and triangle from given dimensionsTessellationCHAPTER 5 FRACTIONSAddition and subtractions of mixed numbers and unlik

8、e fractionsProduct of fractionsConcept of fraction as divisionDivision of a proper fraction by a whole number1. What is of 1h 8 min2. Express day in hours.3. There are 18 apples and 12 oranges in a basket. What fraction of the fruits are oranges4. How many hours isof a day 5. There are sixths in.6.

9、Mr. Tan bought some tables. of them were red. The remaining 33 tables were white. How many tables did he buy altogether Ans: 7. Carl had 8? m of rope. He cut out 3 pieces of ropes measuring 1? m each. Find thelength of the rope left.8. Ans: 9. of a number is 36. What is of the number 10. of the peop

10、le at a concert were women and of them were children.If there were 300 men, how many women were there at the concert Ans:11. 27 kg of rice are shared equally among 7 people. How much rice does each person get Leave your answer in its simplest form.()12. Express 1 390 m as a fraction of 2 km.()13. A

11、piece of wire m long is cut into 6 equal pieces. Amy used 3 pieces to tiesome presents. What fraction of the wire did she use altogether()14. Find the value of 2+ 1.()15. Ben was told to guess a number. He guessed the number to be 8. His guess is? of theactual number. What is the actual number()16.

12、10 girls received ? kg of strawberries each. What is the total weight of strawberries inkg (Express your answer in its simplest form)()17. Henry bought 60 m of ribbon. He gave away ? of the ribbon to Kelly. How many metres of the ribbon did he give away()18. Bala gave of his stamps to his brother an

13、dof the remainderto his sister. He had 10 stamps left. How many stamps did he have at first()19. A rabbit weighs kg. A hamster is of the mass of the rabbit. What isthe total mass of the two animals (Express your answer as a mixed number in its simplestform.)()20. A pair of jeans cost 3 times as much

14、 as a skirt. Brenda spentof her moneyon some skirts and half of her remaining money on a pair of jeans. How many skirts did shebuyCHAPTER 6 DECIMALSMultiplication up to 2 decimal places by a 2-digit whole numberMultiplication and division up to 3 decimal places by tens, hundreds, thousands1. Zafran

15、paid $243 for 90 markers. If the price of each marker decreased by $, how many moremarkers could he buy with the money he had()2. Round off to 1 decimal place. ()3. Round off to 2 decimal place.()4. Round off to 2 decimal place.()5. 3 ones, 50 hundredths and 2 thousandths is6. 10 tens, 9 hundredths

16、and 7 thousandths is.7. Ray finished 2/3 of his Math homework. What percentage of his homework did he finish Give your answer rounded off to 2 decimal places.()8. In every litre of honey water juice, there is 200 ml of honey syrup. The rest of the juiceis made up of water. How much water will there

17、be in litres of honey water juice Leave your answer in litres.()CHAPTER 7 AVERAGE, RATE & SPEEDAverageRate1. Joyce can write 28 words in 2 minutes. At this rate, how many words can she write in 8minutes()()CHAPTER 8 RATIO & PROPORTION1. () : 6 = 28 : 42. Fill in the missing number in the bracket.2.

18、There are 30 buttons in a box. 10 buttons are black and the rest are white. What is theratio of the black buttons to the white buttons3. Lina saves $53 a month. How much will she save in years ()4. There are 48 pens and 72 pencils in a container. What is the ratio of the number of pencils to the num

19、ber of pens()5. The marks May and Brenda scored in an Chinese test are in the ratio of 3 : 5. If May has 18 marks less than Brenda, how many marks did May score()6. There are 800 men and women at a party. 300 of them are women. What is the ratio of thenumber of men to the number of women at the part

20、y7. The ratio of the number of teachers to pupils at a school is 1 : 9. If there are 108 pupils,how many teachers are there()8. A piece of wire of 160 cm long was cut into 2 pieces in the ratio of 6 : 2. The shorter piece was bent to form a square. What is the length of the square()9. The ratio of T

21、ina s mass to Joyce s mass is 4 : 3. If Tina s mass decreased by 6 kg andJoyce s mass is increased by 1 kg, Tina will have the same mass as Joyce. What is Joyce soriginal mass(10. Andy, Ben and Cavin have a total sum of $96. Andy and Ben have $80. What is the ratio ofCavin s share to the total sum o

22、f money()11. 3 chickens cost $36 and 8 fishes costs $72. How much does 6 chickens and 4 fishes costaltogether()12. A taxi can carry maximum of 4 passengers. What is the least number of taxis needed totransport 21 passengers()13. If Gary packed 40 apples in each crate, what was the minimum number of

23、crates he needed to pack 4860 apples()14. The ratio of Marcus s age to Francis s age is 5 : 6. Their total age is 77 years. How oldis Marcus15. The area of a rectangle is 72 cm2. Its length is 18 cm. What is the ratio of the length toits breadth()16. The number of chickens and ducks on a farm is in

24、the ratio of 4 : 7. There are 21 more ducks than chickens. How many chickens and ducks are there altogether()17. Jill had 150 stamps. She kept half of them and shared the rest between Grace and Ahmad inthe ratio of 2 : 3. How many stamps did Ahmad receive()18. Charles could buy 8 plums and 5 mangoes

25、 with $. He could buy 16 such plums with the sameamount of money. If he decides to buy mangoes only, how many mangoes can he buy with $10019. Henry won $2 400 in a contest. He kept ? of it and gave the remainder to his wife, sister and brother. His wife received 2/3 of the money, his sister received

26、? of it and hisbrother received the rest.a. How much did his wife receiveb. What is the ratio of his wife s share to his brother s share20.CHAPTER 9 PERCENTAGEConcept of percentagePercentage of a quantity1. Express 1 1/5 as a percentage.2. Raymund was given a 20% discount for a meal that cost $6. Ho

27、w much did he pay for the mealPercentage and Problem SumsDate: 18 July20101.2.Expressas a percentage.Express 28% as a fraction in its simplest form.3.Express ? % as a fraction in its simplest form.4.Raymund was given a 20% discount for a meal that cost $6. How much did he pay for the meal5. During a

28、 sale, Alicia was given a 15% discount for a book that cost $12. How much would she save if she buy the book during the sale6. David saved $9 every day. After a number of days, he used all the money that he had save to buy a few7.8. storybooks that cost $21 each.9.(a) What was the least number of da

29、ys that he needed to save in order to buy the storybooks ？(b)(c) How many storybooks did he buy10. There were some markers in a box.of the markers were black and the rest were red.of the black andof the red markers were taken out from the box and therewere 111 markers left inthe box. How many marker

30、s were there in the box at firstof the11. David had some durians. He sold of them in the afternoon and remainder in the evening. There12.13. were 30 fewer durians sold in the evening than in the afternoon.14.a. How many durians did he sell in all ？b.c. If he sold the durians at $5, how much money did he collect altogether1 of the reminder on some snacks.15. Danny spent 2 ofhis money on a bag andW