1.3/7 × 49/9 - 4/3 = 5/3
2.8/9 × 15/36 + 1/27 = 1 1/27
3. 12× 5/6 – 2/9 ×3 = 28/3
4.8× 5/4 + 1/4 = 4 1/4
5.6÷ 3/8 – 3/8 ÷6 = 255/ 16
6.4/7 × 5/9 + 3/7 × 5/9 = 5/9
7.5/2 -( 3/2 + 4/5 ) = 1/5
8.7/8 + ( 1/8 + 1/9 ) = 10/9
9.9 × 5/6 + 5/6 = 25/3
10.3/4 × 8/9 - 1/3 = 1/3
1 1.7 × 5/49 + 3/ 14 = 13/ 14
12.6 ×( 1/2 + 2/3 )= 7
13.8 × 4/5 + 8 × 1 1/5 = 24
14.3 1 × 5/6 – 5/6 = 25
15.9/7 - ( 2/7 – 10/2 1 )= 3 1/2 1
16.5/9 × 18 – 14 × 2/7 = 6
17.4/5 × 25/ 16 + 2/3 × 3/4 = 7/4
18. 14 × 8/7 – 5/6 × 12/ 15 = 46/3
19. 17/32 – 3/4 × 9/24 = 13/ 16
20.3 × 2/9 + 1/3 = 1
2 1.5/7 × 3/25 + 3/7 = 18/35
22.3/ 14 × 2/3 + 1/6 = 13/42
23. 1/5 × 2/3 + 5/6 = 29/30
24.9/22 + 1/ 1 1 ÷ 1/2 = 13/22
25.5/3 × 1 1/5 + 4/3 = 5
26.45 × 2/3 + 1/3 × 15 = 35
27.7/ 19 + 12/ 19 × 5/6 = 17/ 19
28. 1/4 + 3/4 ÷ 2/3 = 1 1/8
29.8/7 × 2 1/ 16 + 1/2 = 2
30. 10 1 × 1/5 – 1/5 × 2 1 = 16
3 1.50+ 160÷40 (58+360)÷(64-45) = 138
32. 120- 144÷ 18+35 = 147
33.347+45×2-4 160÷52 = 357
34(58+37)÷(64-9×5) = 5
35.95÷(64-45) = 5
36. 178- 145÷5×6+42 = 46
37.8 12-700÷(9+3 1× 1 1)= 8 10
38.85+ 14×( 14+208÷26) = 393
39.(284+ 16)×(5 12-8208÷ 18)= 16800
40. 120-36×4÷ 18+35 = 147
4 1.(58+37)÷(64-9×5) = 5
42.(6.8-6.8×0.55)÷8.5 = 0.36
43.0. 12× 4.8÷0. 12×4.8 = 23.04
44.(3.2× 1.5+2.5)÷ 1.6 = 4.5625
45.6- 1.6÷4 = 5.6
46.7.2÷0.8- 1.2×5 = 3
47.6.5×(4.8- 1.2×4)= 0
48. 10. 15- 10.75×0.4-5.7 = 0. 15
49.5.8×(3.87-0. 13)+4.2×3.74 = 37.4
50.32.52-(6+9.728÷3.2)×2.5 = 9.92
5 1.-5+58+ 13+90+78-(-56)+50 = 340
52.-7*2-57/3 = -33
53.(-7)*2/( 1/3)+79/(3+6/4) = 59.556
54. 123+456+789+98/(-4) = 1343.5
55.369/3-(-54-3 1/ 15.5) = 179
56.39+{ 3x[42/2x(3x 8)]} = 155 1
57.9x8x7/5x(4+6) = 1008
58. 1 1x 22/(4+ 12/2)= 24.2
59.94+(-60)/ 10 = 100
solve an equation
3X+5X = 48 14X-8X = 12 6 * 5+2X = 44
20X-50 = 50 28+6X = 88 32-22X = 10
24-3X = 3 10X *(5+ 1)= 60 99X = 100-X
X+3 = 18 X-6 = 12 56-2X = 20
4y+2=6 x+32=76 3x+6= 18
16+8x=40 2x-8=8 4x-3*9=29
8x-3x= 105 x-6*5=42 x+5=7
2x+3 = 10 12x-9x = 9 6x+ 18 = 48
56x-50x=30 5x= 15 78-5x=28
32y-29=3 5x+5= 15 89x-9=80
Do an arithmetic problem orally.
2/ 1*2= 1 3/ 1*3= 1 3/2*3=2 3/ 1*6=2
4/3*8=6 5/3*20= 12 7/3* 14=6 8/7*40=35
4/3* 16= 12 9/5*27= 15 2/ 1*30= 15 12/7*24= 14
30/ 1*30= 1 5 1/9* 102= 18 19/9*76=36 4/9*8= 18
5/8*90= 144 99/98*99=98 3/ 14*6=28 7/ 1*28=4
10/ 1*90=9 5/3* 105=63 19/7*38= 14 5/ 1*25=5
8/ 19* 16=38 6 1/60* 122= 120 7/2*28=8 6/ 1*48=8
9/7* 18= 14 25/7* 100=28 9/5*8 1=45 8/9* 16= 18
12÷3/5 = 12×(5/3)9÷6/7 = 9×(7/6)30÷5/6 = 30×(6/5)4×(3/2)= 4÷2/3(4)÷5/7 = 4×7/5 3÷4/5 = 3×5/4(24)÷7/ 16 = 24×( 15
636- 198= 3.6÷0.036= 7÷ 19= 3.7×0. 1% = 6÷(-)= 8. 1+= ×( 15+)= 1-+= 0.4×0.2= 9-0.9= 10.75-(0.75+3.4)= 72÷0.4=
24÷= 0.2-= (3+) ×5= 1÷×= +÷ = 3005-899= 7.25+2.75= 9.8÷98= 0. 125×29×8 = 578+2 16= 18.25-3.3= 3.2- = ×8. 1 = + = 2 ÷3= 0.99×9+0.99= 2 × = 26.26÷26= 2 1 ÷7= 26.26÷26= 4.57+6.43= 7.9× 1 1-7.9= 1 ×8+ 1 ×2= 3+ -3+ =
0. 1×30%= 2÷ 1%-2= ÷ =
1.8×4×0.5= 1.5- 1.5×0.3= 1 ×8+ 1 ×2= 3. 14×32= += 100×0. 1%=
Application of fraction (percentage)
A bamboo pole is 1.5 meters above the water surface, and the part in the mud accounts for 1/5 of the total length. The part in the water is 0.5 meters more than that in the mud. How long is this bamboo pole?
2.15 is used for the first time in a barrel of oil, which is 20kg more than the first time, leaving16kg. How many kilograms is this barrel of oil?
Xiaohua has a story book. On the first day, he finished reading 1/8 of this book in 2 1 pages. The next day, he read 1/6 of the book, and six pages were missing, leaving 172 pages. How many pages does this story book have?
4. Class 6 (1) has boys 12, and the number of girls accounts for 50% of boys. How many students are there in Class Six (1)?
5. After cutting 1/4, connect it with a rope for 5 meters. This is 3/ 16 shorter than the original rope. How long was the original rope?
6. The number of male employees in a factory is less than 80% of the total number of full-time employees, and the number of female employees is 1/3. How many employees are there in this factory?
7. Two piles of lime *** 1764 kg, the first pile used 3/4, and the second pile used 504 kg. Then the remaining weight of the two piles of lime is equal. How many kilograms are these two piles of lime?
8. Brother and brother coexist 1 10 yuan. If the elder brother takes out 20% of his savings and the younger brother deposits it in 7 yuan, then their savings are equal. How much money did they save at first?
9. A batch of rice from the grain store sold 1/3 for more than 20 kilograms on the first day, and sold 3/5 of the first day the next day, leaving 122 kilograms. How many kilograms is this batch of rice?
10. A bundle of wires used more than 1/2 3 meters for the first time, the remaining 1/2 used less than 10 meters for the second time, and used 15 meters for the third time, and finally there were 7 meters left. How long is this bundle of wires?
1 1. The output of a TV factory in 2004 was higher than that in 2003 1/25. The output in 2004 was 5200 units. How many sets have been added?
12. Only two-thirds of the seats on the long-distance bus are passengers. If there are 6 passengers, the ratio of seats to empty seats is 4: 1. How many seats are there in this bus?
13. Xiao Yi read a book. On the first day, he read 2/ 15 of this book. The next day, he read six more pages than the first day. At this time, the ratio of the number of pages read to the remaining pages is 3:7. How many pages are there in this book?
14. A right-angle reminder, the ratio of the upper bottom to the lower bottom is 3:5. If the upper bottom is increased by 7㎝ and the lower bottom is increased by 1cm, it will become a square. What is the area of this trapezoid?
15. There are two wires, one is 2 1 m long and the other is 13 m long. After cutting the two wires with the same length, it is found that the ratio of the remaining length of the short wire to the remaining length of the long wire is 8: 13. How many meters are left in the two lines?
16. the original number of team b is compared with the original number of team a 3: 1. Now 30 people are sent from team A to team B, and the number of team B is 2/3 of that of team A. How many people were there in each team at that time?
17. The original cement bag ratio of warehouse A and warehouse B is 4:3, warehouse A uses 48 bags, and warehouse B uses 2:3 cement bags. How many original cement bags are there in Warehouse A and Warehouse B?
18. The original cement bag ratio of warehouse A and warehouse B was 4:3, and 48 bags were transferred from warehouse A to warehouse B. At this time, the cement bag ratio of warehouse B was 2:3. How many packages are there in warehouse A and warehouse B?
19. Party A and Party B produce the same kind of parts; In April, their planned output ratio was 4: 5. At the end of the month, the actual output of Party A exceeded the original plan by 65,438+05%, and the actual output of Party B exceeded the plan by 65,438+02%. They actually produced a * * * 65,438+0,632 parts. How many parts did Party A and Party B originally plan to produce?
Students in Class Two, Grade Six planted 65,438+050 trees in three days. The ratio of trees planted on the first day and the second day is 5: 6, and the ratio of trees planted on the second day and the third day is 3: 2. How many trees were planted in the first, second and third days?
Two cars, 2 1.A and b, set out from two places with a distance of 190km respectively and met on the way. The speed ratio of the two cars is 4: 3, and the time ratio when they meet is 5: 6. How many kilometers did the two cars travel when they met?
22. There are two baskets of oranges. Take out 20 oranges from the first basket and put them in the second basket. This means that the number of the second basket is exactly 60% of the first basket. It is known that there are forty oranges in the second basket. How many oranges are there in the first basket?
23. Xiaohong and Xiaoming collected many stamps together. It is known that Xiaohong's collection of stamps is three-quarters of the total number of stamps collected by the two of them, and seven stamps are missing. Xiaoming's collection of stamps is more than one-third of the total number of stamps collected by the two of them. How many stamps did Xiaohong collect?
24。 There is a barrel of oil, accounting for two-thirds of the oil quality. After using 44 kilograms of oil, the remaining oil is half of the barrel. How many grams of oil are there in the barrel?
25。 In a book, the number of pages read is equivalent to two-thirds of the whole book, 8 pages are missing, 6 pages are missing for those who haven't read, and 75% is missing. How many pages are there in the whole book?
26. The oil yield of soybeans is 54%. How many kilograms of oil can be extracted from 40 kilograms of soybeans?
27. The survival rate of Chinese fir is 95%. This year, 285 trees were planted on Arbor Day. How many trees have been planted?
28. A book has 360 pages. On the first day, I read 40% of the book, and the next day, I read 25% of the book. How many pages are left?
29. Plant 40% wax gourd on one plot, and plant tomatoes and eggplant on the rest according to the ratio of 3: 2. It is known that eggplant is planted in 0.6 hectares. How many hectares is this land?
30. Xiaojun read a story book. On the first day, he read 42 pages, the next day he read 43 pages, and the remaining 83% books were not read. How many pages does this story book have?
3 1, a pile of coal, used 20 tons, the rest used 25%, how many tons is this pile of coal?
32. The youth farm harvested 8.5 hectares of wheat on the first day, and 20% more on the second day. How many hectares were harvested the next day?
A pig farm raised 400 pigs this year, 25% more than last year. How many pigs were raised last year?
34. Grade 6 students in Yuhua Primary School 120, 70 of whom meet the national physical exercise standards. How many people should meet the standard when the "compliance rate" of grade six reaches 85%?
35, a rope, cut off 60% of the total length, leaving 12 meters, how long is the original rope?
36. A canteen burns 5 tons of coal in March and 4.8 tons in April. Compared with March, what percentage of coal was saved in April?
I can only get so much!