1 18 1/3 is less than 2/3 of a number. What's this number?
How much is the15 of 2 15 less than its 4/5?
How much is the number113 of 3 26 less than the number 7/12 1?
Fill in the blanks.
The product of the reciprocal of 1 and 1/5 with itself is ().
2 2/3 and 3/2 guards (), their product is ().
Third, the application problem. (formula)
1 The cement plant completed 7/24 of the annual production tasks from June to March this year. According to this calculation, in the first half of this year,
What percentage of the annual plan can be completed? What's the ratio of overfulfilling the plan in the whole year?
The width of a rectangle is 5/7 and the length is twice the width. Find the area of this rectangle.
A car starts from A and travels at a speed of 55 kilometers per hour 10 minutes to arrive at B. What is the distance between A and B?
Taxis have to pay a business tax of 5% of their income every month and a road maintenance fee of 3% of the business tax. If a taxi earns 8,000 yuan a month, how much tax should it pay each month?
If a handicraft is sold at a fixed price, you will get a 960 yuan; If you sell it at a 20% discount, you will lose 832 yuan. What is the cost of this handicraft?
There are some apples, 30% for Xiao Zhang, the remaining 20% for Xiao Wang and the rest for Xiao Li, so Xiao Li took 28 more apples than Xiao Zhang. How many apples are there?
For a project, it takes 15 days for Team A to repair alone, and 15 days for Team B to repair alone. Now after two days of joint restoration, there are still 40 meters left. What is the total length of the project?
A rectangular piece of paper is 2/3 decimeter long and 1/2 decimeter wide. Cut out the largest square on the right side of this paper. What is the circumference of the remaining small rectangle?
answer
First, column calculation.
1 18 1/3 is less than 2/3 of a number. What's this number?
( 18* 1/3+2)/(2/3)= 12
How much is the15 of 2 15 less than its 4/5?
15*(4/5- 1/5)=9
How much is the number113 of 3 26 less than the number 7/12 1?
12 1*7/ 1 1-26* 1/ 13=75
Fill in the blanks.
The reciprocal of 1 and the product of 1/5 and itself are (1).
2 2/3 and 3/2 defenders (reciprocal), their product is (1).
Third, the application problem. (formula)
1 The cement plant completed 7/24 of the annual production tasks from June to March this year. According to this calculation, in the first half of this year,
What percentage of the annual plan can be completed? What's the ratio of overfulfilling the plan in the whole year?
First half =7/24*2=7/ 12 year excess = 7/12 * 2-1=1/6.
The width of a rectangle is 5/7 and the length is twice the width. Find the area of this rectangle.
Area =5/7*2*5/7=50/49
A car starts from A and travels at a speed of 55 kilometers per hour 10 minutes to arrive at B. What is the distance between A and B?
Distance = 55 * 10/60 = 55/6km.
Taxis have to pay a business tax of 5% of their income every month and a road maintenance fee of 3% of the business tax. If a taxi earns 8,000 yuan a month, how much tax should it pay each month?
Taxable amount = 8000 * 5%+8000 * 5% * 3% = 400+12 = 412.
If a handicraft is sold at a fixed price, you will get a 960 yuan; If you sell it at a 20% discount, you will lose 832 yuan. What is the cost of this handicraft?
Cost =960*0.8+832= 1600
There are some apples, 30% for Xiao Zhang, the remaining 20% for Xiao Wang and the rest for Xiao Li, so Xiao Li took 28 more apples than Xiao Zhang. How many apples are there?
* * * X Xiao Zhang =0.3X, Xiao Wang =0.7X * 0.2-2=0. 14X-2, Xiao Li = X-0.3x-(0.14x-2) = 0.56x+20.56x+2-0.
For a project, it takes 15 days for Team A to repair alone, and 15 days for Team B to repair alone. Now after two days of joint restoration, there are still 40 meters left. What is the total length of the project?
40 * 1-( 1/ 10+ 1/ 15)* 2 = 60m。
A rectangular piece of paper is 2/3 decimeter long and 1/2 decimeter wide. Cut out the largest square on the right side of this paper. What is the circumference of the remaining small rectangle?
Circumference =1/2 * 2+(2/3-1/2) * 2 = 4/3 decimeter.