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In 1-1000 integers, there are () integers which are divided by 3, 5 and 7 to make 2. A.7 b.8 c.9 d.10
C 3*5*7+2=107,107*2,107*3,……………… 107 * 9
Xiaohua walked 2 / 5 kilometers in 5 minutes, how many kilometers in 1 hour?
5 minutes = 1 / 12 hours
2 / 5 △ 1 / 12 = 24 / 5 (km)
Xiaohua travels 3 kilometers in 20 minutes by bike, with an average of several thousand meters per minute
Xiaohua travels 3 kilometers in 20 minutes by bike,
The average distance is 3 / 20 km per minute
It takes 20 / 3 minutes to travel a kilometer
How far is 1.3 km? On foot
It's only 1300 meters. How can it be 2 hours!
Think about the boys running 1000 meters in school, which is about 5 minutes
Now it's about 15-20 minutes, half an hour at most
A person can walk 5 / 6 km in 1 / 3 hour, how many hours does it take to walk 5 / 4 km, and how many kilometers can he walk in 3 / 4 hours?
Walk every hour
6 / 5 / 1 / 3 = 18 / 5 (km)
Four out of five kilometers
4 / 5 △ 18 / 5 = 2 / 9 (hours)
3 / 4 hour walk
18 / 5 × 3 / 4 = 27 / 10 (km)
Xiao Ming walks 5 / 6 kilometers in 1 / 6 hour, he walks () kilometers in 1 hour, and it takes () hours to walk one kilometer
Xiao Ming walks 5 / 6 kilometers in 1 / 6 hour, he walks (5) kilometers in 1 hour, and it takes (1 / 5) hours to walk 1 kilometer
One quarter of an hour walk is seven quarters of a kilometer. According to this calculation, it takes () hours to walk one kilometer, and () kilometers to walk two fifths of an hour
Distance (7 / 4 km) divided by time (1 / 4 hour) = speed 7 km / h
Distance (1km) divided by speed (7km / h) = time (1 / 7h)
Time (5 / 2 hours) times speed (7 km / h) = distance (35 / 2 km)
Xiao Ming traveled 12 kilometers in 56 hours. How many hours does it take him to walk 4514 kilometers at this speed?
A: it takes him 341288 hours to walk 4514 km at this speed
The starting price of a taxi is 5 yuan for 2km, and then 2 yuan for every additional 1km (less than 1000m is counted as 1000m). It costs 35 yuan to take a taxi. If you walk 800m first, then it costs 35 yuan to take a taxi. How much is the midpoint?
35-5 = 30, 30 yuan after the starting price
30 / 2 = 15 km, 15 + 2 = 17 km, so the distance is 16 km
How many hours does it take for someone to walk 3000 meters in one eighth hour? The formula is one eighth divided by three quarters. Why?
Formula: total divided by copies = 1 copy
One eighth is the total time
It's a fraction
That's three fourths
1 / 8 divided by 3 / 4 = 1 / 6
One kilometer takes one sixth of an hour
RELATED INFORMATIONS
- 1. Huang Li walks 3000 meters in an eighth hour. How many thousand hours does it take him to walk 1000 meters?
- 2. Xiaoqiang travels 5 / 3 kilometers in 1 / 3 hour. According to this calculation, he can travel thousands of meters in an hour, and how many hours does it take to travel a kilometer
- 3. (12 and 7 / 2-4 and 5 / 3 △ 2.3) / (10 and 7 / 2 △ 0.875)
- 4. 1. Fill in the spaces of 1 / 2, 1 / 3, 1 / 4, 1 / 5, 1 / 6, 3 / 10, 1 / 12 and 1 / 20 in the figure. It is required that the sum of the four numbers in the square composed of every four squares in the figure (there are five squares in total) is equal to 1 □—□—□ │ │ │ □—□—□ │ │ │ □—□—□ 2. I forgot to close the window of the office. When it was windy in the evening, I scattered a total of 23 documents with 46 sides. In the morning, we all worked together and only recovered the 5th, 11th, 13th, 31st, 32nd and 44th sides. How many sides were not found 3. The distance between a and B is 50 kilometers. A and B start from a and B by bike respectively and walk in opposite directions. A travels 14 kilometers per hour and meets B after walking for 2 hours. After meeting, they continue to advance, but accelerate and decelerate by 20% and B accelerates by 20%. Who will reach the destination first? 4. For a two digit number, the new two digit number is 4 / 7 of the original number after the number of its ten digit number is exchanged with the number of its one digit number? 5. There is a piece of copper zinc alloy, in which the mass ratio of copper to zinc is 2:3. Now add 6 g of zinc to get 36 g of new alloy, and find out the weight ratio of copper to zinc in the new alloy 6. When the store sells pants and shirts, it costs 9 yuan for each piece. The pants will lose 10% and the shirts will earn 10%. When the store sells one pair of pants and shirts, will the store lose or earn? If so, what is the loss? If so, how much is the profit? 1. Fill in the spaces of 1 / 2, 1 / 3, 1 / 4, 1 / 5, 1 / 6, 3 / 10, 1 / 12 and 1 / 20 in the figure. It is required that the sum of the four numbers in the square composed of every four squares in the figure (there are five squares in total) is equal to 1 □—7/60—□ │ │ │ □—□—□ │ │ │ □—□—□
- 5. Calculation: (2 / 5 + 1 / 3) * 5 / 22, which can be easily calculated
- 6. What's 20 points minus 12:00,
- 7. Fill in the nine squares with nine numbers from 1 to 9. The sum of the horizontal, vertical and oblique numbers should be equal to 15 As above
- 8. () multiplied by 0.3 equals 1
- 9. A simple way to solve the recurrence equation is to multiply 102 by 63
- 10. 100 times 1 / 25 equals
- 11. What is the sum of one and two thirds of the thirty-nine and two thirteenth of the thirty-nine?
- 12. Simple operation process of 1111 times 9999 emergency
- 13. Simple calculation of 66 times 35 plus 35 plus 33 times 55
- 14. How much is three plus two minus five times zero plus two minus one plus three divided by four
- 15. 12 × 4:3 × 21:5 = 8:5 + 8:5 × 10:7 = 12:7 × 14:9-9:2=
- 16. 44% of a number is more than 25% of 24. What's the number? 20% of 5 is equivalent to 25% of a number. What's the number?
- 17. 5 / 7 × 3 + 5 / 7 × 4-5 / 7 = (5 / 36 + 1 / 13) × 13 = 45 × 44 / 1 = 85 × 84 / 1 = (simple calculation) Process!
- 18. How much is 36 divided by [2 / 15 times 10]
- 19. 3-12 = 9, the number is a matchstick, please move two matches to make the formula true the sooner the better,
- 20. Subtract the product of 6 and 2 from 2.4 times of X, and the difference is 16.8