Several super simple fraction problems (as long as the formula) 1. A grain store buys 80 tons of rice, the flour is one fifth less than rice, how many tons of flour? 2. A grain store buys 64 tons of flour, the flour is one fifth less than rice, how many tons of rice? 3. A grain store buys 16 tons less than rice, the flour is one fifth less than rice, how many tons of rice?

Several super simple fraction problems (as long as the formula) 1. A grain store buys 80 tons of rice, the flour is one fifth less than rice, how many tons of flour? 2. A grain store buys 64 tons of flour, the flour is one fifth less than rice, how many tons of rice? 3. A grain store buys 16 tons less than rice, the flour is one fifth less than rice, how many tons of rice?

1. 80 × (1-1 / 5) = 2. A grain store buys 64 tons of flour, one fifth less than rice, and how many tons of rice it buys? 64 × (1-1 / 5) = 3. A grain store buys 16 tons less than rice, one fifth less than rice, and how many tons of rice it buys? 16 × 1 / 5=

Cubic meter within 10000

1 cubic 1
2 cubic 8
3 cubic 27
4 cubic 64
5 cubic 125
6 cubic 216
7 cubic 343
8 cubic 512
9 cubic 729
10 cubic 1000
11 cubic 1331
12 cubic 1728
13 cubic 2197
14 cubic 2744
15 cubic 3375
16 cubic 4096
17 cubic 4913
18 cubic 5832
19 cubic 6859
20 cubic 8000
21 cubic 9261
22 cubic 10648

In the second chapter of the first grade of junior high school, we find the law of rational numbers,
① 2,6,12,20,30,( )
A:38 B:42 C:48 D:56
② 1,3,4,7,11,( )
A; 14 B:16 C:18 D:20
⑤ 34,36,35,35,( ),34,37,( )
A:36,33 B:33,36 C:37,34 D:34,37

① B the difference between the first number and the next number is an arithmetic sequence with 4 as the first number and 2 as the tolerance. ② C the sum of the first number and the second number is the third number, and so on. ⑤ a the sum of the first number and the second number is 70, the sum of the second number and the third number is 71, and the sum of the third number and the fourth number is 70

In a subtraction formula, the sum of the subtracted, the subtracted and the difference is 168. The ratio of the difference and the subtraction is 3:4. What are the differences and the subtractions?

Subtracted = subtracted + difference
So: sum of subtraction and difference: 168 △ 2 = 84
3+4＝7
Difference: 84 × 3 / 7 = 36
Subtraction: 84 × 4 / 7 = 48

Is the price of custom cabinet door calculated by meter or square meter

It will come,
1. Cut off an angle of the square and find the sum of the inner angles of the figure
2. Except one inner angle, the sum of the other inner angles is 2030 degrees
3. There are 32 teams participating in the 2006 World Cup in Germany. If we regard 32 teams as 32 fulcrums in a polygon and play one round robin (each team plays one game with other teams), how many games will we play in total?

1. The figure obtained is pentagonal, and the sum of internal angles is 180 × (5-2) = 540 degrees
2. Sum of inner angles of n-polygon: 180 ° × (n-2)
2030 ° / 180 ° = more than 50 ° of 11
11+2=13
The sum of interior angles of 13 polygon: 180 ° × (13-2) = 1980 ° less than 2030 °
The sum of inner angles of 14 polygon: 180 ° × (14-2) = 2160 ° and the remaining inner angles: 2160 ° - 2030 ° = 130 °
The degree of this inner angle is 130 degrees, which is a 14 sided shape
3. Each team has played 32-1 = 31 games, one game between each two teams
A total of 496 games will be played

What is 2 out of 15 + 7 out of 15 + 8 out of 15 + 13 out of 15?

2 out of 15 + 7 out of 15 + 8 out of 15 + 13 out of 15
=(2 / 15 + 13 / 15) + (7 / 15 + 8 / 15)
=1+1
=2

The scenery in my heart
600 words,

The text is segmented in Chinese lesson 22 in Volume 1 of grade 5
It's the segmentation and meaning of lesson 22

What version is it? If it's Su Jiao version, it's:
Section 1 to 2 is the first section, which describes the natural wonders of Anhui Taiji cave
Paragraph 3 - 4 is the second paragraph. If you write your goal, you will succeed
5 is the third paragraph, which summarizes the full text and reveals the Enlightenment of "dripping wears away stone"

If [x] denotes the largest integer not greater than x, for the positive rational number a, find the positive integer solution of the equation [(3x + a) / 4] = 2

The equation can be changed to
2 ≤ 3x + A / 4 < 3, i.e. 8 ≤ 3x + A