Please come up with a few small simple calculations 5

1 If a*b 5 a 1 2 b is specified, where a and b are natural numbers, then 10*6=

2 A simplest fraction divides its numerator by 2 and multiplies the denominator by 3 to give 3 29, and this simplest fraction is

4 If there are only two questions in a math test, and 10 people in the class get all of them right, 25 people get the first question right, and 18 people get the second question wrong, so there are people who get both questions wrong.

5. For a project, it takes 14 days for A to be completed alone, 7 days for team B to complete alone, and 6 days for team C to complete alone. Now, after three days of working together for teams B and C, A will do the rest alone, and it will take another few days to complete the task.

6 In the integers from 1 to 2000, there are multiples of 3 but not 5.

7 A string of beads is strung in a circle of 8 red and 2 black, with a total of 40 beads. A cricket starts its jump with the second black bead, and each time it jumps 6 beads and lands on the next bead, the cricket must jump at least once before it can land on the black bead again.

8 The natural number n has many factors, and summing these factors in pairs gives a new set of numbers, the smallest of which is 4, the largest is 196, and n has a factor.

1.（2.Write the number directly.

3 Short. 4 Off-line calculations.

5. Solve equations.

x＝24:12 3x－6 ＝

6. Columnar calculation.

1) How much does the difference between 8 and 4 divided by 2 get?

2) 15 is 4 times less than 12 of a number, what is this number?

Look at the chart first, then ask questions).

Statistical chart of output value of a factory in the first four quarters of 2001.

Question 1: Column:

Question 2: Columnar Formula:

Application question 1, Master Wang processes a batch of parts, the original plan is to process 30 parts per hour, which can be completed in 6 hours, and the actual processing per hour is 20 more than the original plan, and the actual processing of this batch of parts is several hours ahead of the original plan?

2. A cylindrical oil drum, the inner diameter of the bottom surface is 40 cm, the height is 50 cm, if the diesel weight per cubic decimeter weighs kilograms, how many kilograms of diesel can this oil drum hold?

3. Wang Fei went to the mountain library to borrow books, and he traveled 3 kilometers per hour up the mountain and 6 kilometers per hour when he returned from the same road. Find the average speed at which he goes up and down the mountain.

4, the passenger car and the truck at the same time from the midpoint of A, B to the opposite direction, 5 hours later, the passenger car arrived at the first place, the truck is still 60 kilometers away from the B, the speed ratio of the truck and the passenger car is known to be 5:7, how many kilometers apart from A and B?

5. Hope Primary School originally planned to buy 12 leather balls, each yuan, but now from the money to buy this ball, I took out the yuan to buy a skipping rope, and the rest of the money can buy a few leather balls?

6. There is a batch of goods in the warehouse, the weight ratio of the goods transported away and the remaining goods is 2:7, if 64 tons are transported away, then the remaining goods are only the original goods in the warehouse, how many tons of the original goods in the warehouse?

7. A and B jointly completed 242 machine parts. It takes 6 minutes for A to make a part, and 5 minutes for B to make a part. How many parts did each of the two make when they finished this batch of parts?

62 and 20600

Long answer: Another 3/5 is 14%, so the original formula 8 and 3/5 * is calculated.

Calculate the following questions in an easy way.

Calculate it in an easy way.

Calculate the following questions

Compute. （1∶1）

Off-line calculations.

1.Write the number directly. (5 points).

2.Calculate it in an easy way. (6 points).

3.Compute. (L2 points).

4.Columnar calculations. (6 points).

l) What is the quotient of the product of and and the difference between and and and

2) A number is more than 30 of 25, find this number.

Solution: Mo Mo Xiao Yuan Blind Containing Jujube = [9991 ( =[9991 1999( =9991 1999 =19972009

Landlord, you seem to have made a mistake, and the number of a liter is not 1, but a loss of 6, it should be 1 5

Think of it as (1+b) (a)-(1+a) (b).

1×a-1×b

1*1 5 (formula, the first number of the third term multiplied by the last of the third term).