2. The rabbit and the kitten go upstairs together. A kitten is twice as fast as a rabbit. When the rabbit went up to the fourth floor, the kitten went up to the () floor.
3. A kind of weed, which grows 1 time every day, can grow to 48mm in 12 days, and it takes () days to grow to 6 mm..
Xiao Qiang has two packages of sweets, one with 48 capsules and the other with 12 capsules. He took three capsules out of the extra package at a time and put them into fewer packages. After () times, the number of two packs of candy can be equal.
5. Write a string of numbers immediately after 4444, and each number written is a digit of the product of its previous two numbers. For example: 4×4= 16, write 6,4× 6 = 24 after 4, and write 4 after 6 to get a series of numbers: 4444644644 ... This series of numbers starts from 1 and counts to the right. The 444th digit is ().
6. Mom is frying eggs in the pot. Eggs should be fried on both sides. Fry each side for 30 seconds. This pot can only fry two eggs at the same time. It takes at least () seconds to fry three eggs now.
7. There are two piles of fruit, a pile of apples and a pile of pears. If 1 apple is replaced by 1 pear, there are two more apples. If 1 pear is replaced by two apples, there are 1 pear. Think about it, there are () apples and () pears.
8. A road has been built, with 2.6 kilometers left. It is known that there are 0.2 kilometers more unrepaired than repaired. The total length of this road is () kilometers.
9. A barrel of oil weighs 5.6 kg, and the barrel weighs 3. 1 g after half of the oil is used. The net weight of this barrel of oil is () kilograms.
10. pesticide plant produces a batch of pesticides with a daily output of 0.24 tons. If the price is 28.5 yuan per 500 grams. The value of pesticides produced by this factory every day is () yuan.
1 1. Knowing that the numbers A, B, C and D are not zero, we know that:
Number A ÷ B =0.5 number D ÷ B = 1.0 1 number c ÷ 0.4 = b.
A number ÷ 1.25= C number
Compare the sizes of four numbers, A, B, C and D, in descending order, and the third number is ().
12.3.704 The number after the decimal point of 100 is ().
13. 1993× 199.2- 1992× 199. 1=( )
14. 15.37×7.88-9.37×7.88- 15.37×2. 12+9.37×2. 12=( )
15. There are three people, A, B, C, A walks 50 meters per minute, B walks 40 meters per minute, and C walks 60 meters per minute. A, B set out from East Village, C set out from West Village, and set out at the same time. A meets C 40 minutes after takeoff, and B meets C 40 minutes after takeoff.
1. turtle crane * * * 100 with 350 feet. How many turtles and cranes are there?
There are 26 sets of chess and checkers in the school, just enough for students to carry out activities at the same time. There are two sets of chess and six sets of checkers. There are several pairs of chess and checkers respectively.
3. Some 2-cent and 5-cent coins are worth 2.99 yuan, among which the number of 2-cent coins is 4 times that of 5-cent coins. How many nickels are there?
4. Some people got 240 yuan, including 2 yuan, 5 yuan, 65,438+00 yuan and 50 RMB * *, among which 2 yuan and 5 yuan had as many. So how many pieces are there in 2 yuan, 5 yuan and 10 yuan?
5. A project was completed in 0/2 days by Party A and 0/8 days by Party B. Now Party A has done it for several days, and then Party B finished the rest alone, so it took 16 days before and after. How many days did Party A do it first?
6. The whole motorcycle race is 28 1km, which is divided into several stages. At each stage, some of them are composed of uphill roads (3 kilometers), flat roads (4 kilometers), downhill roads (2 kilometers) and flat roads (4 kilometers). Some of them are composed of uphill roads (3 kilometers), downhill roads (2 kilometers) and Pingdi roads (4 kilometers). It is known that after the motorcycle completed the journey, * * * ran 25 uphill roads. The whole journey includes several parts of these two stages.
1. Mother squirrel can pick 20 pine nuts every day in sunny days, but only 12 in rainy days. She picked 1 12 pine nuts for several days, with an average of 14 pine nuts per day. How many days has it rained these days?
There is a swimming pool. It takes 24 minutes to fill the pool just by turning on faucet A, and 36 minutes to turn on faucet B. Now turn on faucet A for a few minutes, then turn off faucet A and turn on faucet B to fill the pool. It is known that faucet B takes 26 minutes longer than faucet A. How many minutes does it take to fill the pool?
3. A project can be completed by team A in 50 days and team B in 75 days. Now the two teams are working together, but team B has been transferred for a few days because of other tasks. It took 40 days to finish the project after it started. Ask Team B how many days did they walk halfway?
Xiaohua runs after walking from home to school. His walking speed is 600 meters per minute and his running speed is 140 meters per minute. Although the walking time is 4 minutes longer than the running time, the walking distance is 400 meters less than the running distance. How far is it from home to school?
5. Professors 16, some graduate students 1, some graduate students 2, some graduate students 3. They brought 27 graduate students. Among them, 1 has as many professors as 2 or 3 graduate students. How many professors are there with two graduate students?
6. A shopping mall held a shopping lottery to attract customers. There are three kinds of prizes: first prize 1000 yuan, second prize 250 yuan and third prize 50 yuan. * * * Number of winners 1 0,000, with a total prize of 9500 yuan. How many people won the second prize?
7. There is a pile of coins with face values of 1, 2 and 5, in which the number of coins of 1 is1times that of coins of 2. It is known that the total face value of this pile of coins is 1 yuan. How many coins with 5 are there?