Math topic中文

Fraction and percentage word problems

Identify the unit whole, convert between rates and quantities, and chain multi-step fraction changes.

Learn these first

Meaning of fractions

Practice questions

  1. 1Alicia, Brenda, and Colby were the candidates in a recent election for student president. The pie chart below shows how…
  2. 2Mr. Ramos gave a test to his class of 20 students. The dot plot below shows the distribution of test scores. Later Mr. R…
  3. 3Jamal has a drawer containing 6 green socks, 18 purple socks, and 12 orange socks. After adding more purple socks, Jamal…
  4. 4Three fourths of a pitcher is filled with pineapple juice. The pitcher is emptied by pouring an equal amount of juice in…
  5. 5In the land of Markovia , there are three cities: AA, BB, and CC. There are 100 people who live in AA, 120 who live…
  6. 6The clock in Sri's car, which is not accurate, gains time at a constant rate. One day as he begins shopping he notes tha…
  7. 7根据半岛电视台报道，阿富汗战争共导致阿富汗全国22.1%的人口受伤，12.92%的人口死亡．据统计，阿富汗战后的总人口是2212万人．那么在这场战争中，共导致阿富汗百分之 的人口伤亡．阿富汗在战前的人口总数是 万人．（保留4为有效数字）
  8. 8Lily is conducting a range test on her new electric vehicle (EV). When she started her journey, thedashboard showed a fu…
  9. 9Karl's car uses a gallon of gas every 35 miles, and his gas tan k holds 14 gallons when it is full. One day, Karl starte…
  10. 10Brynn's savings increased by 20%20\% in July, then decreased by 50%50\% in August. Brynn's savings are now what percent of…
  11. 11大学生小刘正在出售一批衬衫，每件提价25％25％后发现销路不是很好，欲恢复原价，则每件衬衫应降价()(\quad) A. 15％15％ B. 20％20％ C. 25％25％ D. 30％30％
  12. 12On a beach 50 people are wearing sunglasses and 35 people are wearing caps. Some people are wearing both sunglasses and…
  13. 13Chloe and Zoe are both students in Ms. Demeanor's math class. Last night they each solved half of the problems in their…
  14. 14A lake contains 250250 trout, along with a variety of other fish. When a marine biologist catches and releases a sample o…
  15. 15An amusement park has a collection of scale models, with a ratio of 1:201 : 20, of buildings and other sights from around…
  16. 16Jefferson Middle School has the same number of boys and girls. 34\frac{3}{4} of the girls and 23\frac{2}{3} of the boys…
  17. 17Gilda has a bag of marbles. She gives 20%20\% of them to her friend Pedro. Then Gilda gives 10%10\% of what is left to ano…
  18. 18A large square region is paved with n2n^2 gray square tiles, each measuring ss inches on a side. A border dd inches wi…
  19. 19Harold made a plum pie to take on a picnic. He was able to eat only 14\frac{1}{4} of the pie, and he left the rest for h…
  20. 20Peter lives near a rectangular field that is filled with blackberry bushes. The field is 10 meters long and 8 meters wid…
  21. 21All of Marcy's marbles are blue, red, green, or yellow. One third of her marbles are blue, one fourth of them are red, a…
  22. 22In a middle-school mentoring program, a number of the sixth graders are paired with a ninth-grade student as a buddy. No…
  23. 23A group of frogs (called an army) is living in a tree. A frog turns green when in the shade and turns yellow when in t…
  24. 24A cup of boiling water (212∘F212^\circ F) is placed to cool in a room whose temperature remains constant at 68∘F68^\circ F. S…
  25. 25Suppose 15%15\% of xx equals 20%20\% of yy. What percentage of xx is yy? A. 5 B. 35 C. 75 D. 13313133\frac{1}{3} E. 300
  26. 26Sarika, Dev, and Rajiv are sharing a large block of cheese. They take turns cutting off half of what remains and eating…
  27. 27A store increased the original price of a shirt by a certain percent and then decreased the new price by the same percen…