Math topic中文

Four operations on decimals and fractions

Carry out simple four operations (addition, subtraction, multiplication, division) on decimals and fractions.

Practice questions

  1. 1下面算式中积最小的是()(\quad) A. 4.6×8.64.6×8.6 B. 86×0.4686×0.46 C. 8.6×0.468.6×0.46
  2. 2Andy had $5x. After buying apples at 60c each, he had $2x left. How many apples did Andy buy? Answer: ___
  3. 3某楼盘去年每平方米售价50005000元，今年均价上涨了20％20％，房产公司为促销推出以下优惠方案。 方案一：20002000元办一张贵宾卡，可享受九八折优惠。 方案二：不打折，每平方米送8080元装修费。 (1)李叔叔家准备买一套…
  4. 4Part of a measuring tape is shown. What is the value represented by X?
  5. 5央行决定：从2007年12月21日起调整金融机构人民币存贷款基准利率，一年期存款基准利率由现行3.87%提高到4.14%，上调0.27个百分点；所得利息要交纳5%的利息税．例如，存入一年期100元，到期储户纳税后得利息的计算公式为：税后利息…
  6. 6Mrs Raj baked some muffins. 14\frac{1}{4} of them were blueberry muffins, 25\frac{2}{5} of them were chocolate muffins a…
  7. 7Diane wanted to train for a marathon. She started by running 1.6 km in the first week. She increased her distance by 1.2…
  8. 8解方程 7x+2.5=8.87x+2.5=8.8； 4×(x−2.8)=26.44×(x-2.8)=26.4； 7.2÷(x+0.38)=8.7.2÷(x+0.38)=8.
  9. 9A can of mushroom soup costs $3.20 and a bundle of 3 cans of mushroom soup costs $8. Diane wants to buy 20 cans of mus…
  10. 10一个数除以假分数，商定要小于被除数．（判断对错）
  11. 11要想富先修路。某村为了把农产品运出销售，要修一条公路。甲队单独修要15天完成，乙队单独修要10天完成。如果甲、乙两队合修，（ ）天可以修完这条公路的12\frac { 1 } { 2 }。 A. 2 B. 3 C. 6 D. 12
  12. 12Munirah cycled from her home to a park. On her way, she had to cycle past a library. What was the distance she cycled fr…
  13. 13某火锅店2009年11月份的营业额为80万元，如按营业额的5%缴纳营业税，这家火锅店11月份应缴纳的营业税（ ）万元． A. 4 B. 5 C. 6
  14. 14Arrange these volumes from the largest to the smallest. | 2.35 l | 2 l 305 ml | 2352\frac{3}{5} l | | :---: | :---: | :--…
  15. 15Questions 1 to 5 carry 2 marks each. Show your working clearly and write your answers in the spaces provided. For questi…
  16. 16Lindy used 25\frac{2}{5} m of ribbon to make bow. She made a total of 25 bows. How many centimetres of ribbon did she us…
  17. 17计算2.05×1.42.05×1.4时，可以把这个算式看作是 ××，算出得数后，再从它的右边起数出 ___位点上小数点，这个数就是2.05×1.42.05×1.4的积。
  18. 18Questions 16 to 20 carry 1 mark each. Write your answers in the spaces provided. For questions which require units, give…
  19. 19The table shows the parking charges for a motorist in a shopping centre. | | 7 am to 6 pm | After 6 pm | | :--- | :---:…
  20. 20锡澄高速公路养护小组，乘车沿南北向公路巡视维护，如果约定向北为正，向南为负，当天的行驶记录如下((单位：千米))： +17+17，−9-9，+7+7，−15-15，−3-3，+11+11，−6-6，−8-8…
  21. 21下面商小于1的算式是（ ） A. 54÷18 B. 0.54÷0.9 C. 5.4÷0.09 D. 540÷0.9
  22. 22一个桶里有4L4L水，把这4L4L水倒进容积为15L\dfrac{1}{5}L的杯子中，最少可以倒 ___杯。
  23. 23Omar spent $162 more than 1/7 of his monthly salary on transport. He spent $40 less than 1/6 of his remaining salary o…
  24. 24()20=11.9÷17=35\dfrac{(\quad)}{20}=11.9÷17=35：==％％
  25. 25《九章算术》中《均输》卷记载了一道有趣的数学问题：“今有凫((野鸭))起南海，七日至北海；雁起北海，九日至南海．今凫雁俱起，问何日相逢？” 大意为：野鸭从南海起飞，77天飞到北海；大雁从北海起飞，99天飞到南海．现野…
  26. 26一台拖拉机上午耕地4.94.9公顷，下午比上午少0.350.35公顷．这一天一共耕地多少公顷？
  27. 27张叔叔骑着电动车去15km外的农村办事，他的电动车车轮的外直径是40cm，平均转速是每分钟200转，他能在一个小时内到达目的地吗？
  28. 28Derinda had 25 m of ribbon. She used it to make as many flowers as possible. She used 23\frac{2}{3} m of ribbon to make…
  29. 29For Questions 6 to 17, show your working clearly in the space provided for each question and write your answers in the s…
  30. 30The pie chart shows how Michael spent his money. How much money did Michael spend on the book? Answer : (a) ‾\underline{\qquad\qquad\qquad}…
  31. 31小红、小华和小美一同到文具店买文具．小红买5支笔4个本子花了21.3元，小华买4支笔5个本子花了21元，小美买6支笔6个本子花 元．
  32. 32修一条长12千米的公路，已经修了40%，修了多少千米？
  33. 33一支钢笔的零售价是99元，每盒88支装的零售价是6060元，李老师要给全班4848名同学每人买一支，至少需要多少钱？
  34. 34某中学规定：学生的学期体育综合成绩满分为100分，其中，期中考试成绩占30%，期末考试成绩占70%，小宁这个学期的期中、期末成绩（百分制）分别是80分、90分，则小宁这个学期的体育综合成绩是___分．
  35. 35有一圆形花坛，它的周长是14.13米，这一圆形花坛的直径是多少米？
  36. 36一本书250页，小明看了这本书的16%，第三天应从第几天看起？
  37. 37**Questions 16 to 20 carry 1 mark each. Write your answers in the spaces provided. For questions which require units, gi…
  38. 38一种汽车每千米需用油0.1升，它的油箱是长50厘米，宽40厘米，高30厘米的长方体，将它的油箱加满油可行多少千米？
  39. 393.4×10.1=3.4×10+3.4． ． （判断对错）
  40. 40Matt bought some Dino Brand and Lion Brand correction tapes at the prices shown below. 13\frac{1}{3} of the correction t…
  41. 411.25×32=1.25×4+1.25×8． ．（判断对错）
  42. 42小明去书店买书，作文书20.49元/本，童话书12.50元/本，故事书12.24元/本，小明想买两本不一样的书，可能怎样买，需付多少钱？
  43. 43Elly, Nathan and Terence each had an equal number of paperweights. Elly had 9 metal weights and some wooden weights. The…
  44. 44商场月营业额为300万元．按营业额的3%缴纳营业税，商场一年要交营业税多少万元？
  45. 45一个长方体的木箱，长1.2m，宽0.8m，高0.6m．做这个木箱至少要用多少平方米木板？
  46. 46不用计算，判断出商最大的是()(\quad) A. 56.7÷1.0956.7÷1.09 B. 56.7÷156.7÷1 C. 56.7÷0.7756.7÷0.77
  47. 47Six identical rectangular boxes can be stored in a cupboard 1.5 m high. Two arrangements are shown below. The arrangemen…
  48. 48某人按定期2年向银行储蓄1500元，假定年利率为3%（不重复计息），到期支取时，扣除利息税（税率为20%），此人实得利息为（ ） A. 1272元 B. 36元 C. 72元 D. 1572元
  49. 49一根铁丝长3.63.6米，截成同样长的小段，截了44次，每段长 ___米，两段占总长的()()\dfrac{()}{()}。
  50. 50Mr Fong bought a box of markers. 17\frac{1}{7} of the markers were black. 13\frac{1}{3} of the remaining markers were re…
  51. 51Kimi bought 34\frac{3}{4} kg of flour. She used 14\frac{1}{4} of it to bake a cake. She packed the remaining flour into…
  52. 52Express 16.025 metres in kilometres.
  53. 53一个平行四边形的底和高都是1.6m，它的面积是 m 2 ，和它等底等高的三角形的面积是 m 2 。
  54. 54The figure below shows a rectangular tank containing 1500 cm3^3 of water. Find the height of the water level in the tan…
  55. 55Sharon took a taxi from her office to home. Her taxi fare was based on the charges shown. The taxi stopped at a traffic…
  56. 56In 89.76, which digit is in the tenths place?
  57. 57Find the value of 8.92 - 3.50 Ans: (a)___ Find the value of 7.21 + 70 Ans: (b)___
  58. 58为了奖励积极参加数学课外活动的同学，班委去买奖品，1.8元的奖品买了25份，2.5元的奖品买了15份．买这两种奖品一共花去多少钱？
  59. 59已知两个因数的积是1.531.53，一个因数是1818，另一个因数是 ___。
  60. 600.8乘3.6与0.2的积，积是多少？