5th grade math, problem solving. Problem solving in 5th grade

1.88 * 3 - 92 * 2 = 80 (points) 80 points for Chinese.

2.Total number of fruit trees: 120 20% = 600 (trees) 200 600 = of the total number of fruit trees accounted for by the vines.

600*45%=270 (trees) There are 270 peach trees.

1. 88x3-92x2=80

2.Total: 120 20% = 600 Grapes to fruit trees: 200 600

Peach: 600x45%=270

92x2 + x = 88x3

x = 264 - 184 = 80

He scored 80 points in language.

Total number of fruit trees = 120 20% = 120 x 5 = 600.

200 vines 600 total fruit trees = 1 3 = total number of fruit trees accounted for by vines.

Number of peach trees = 45% x total of 600 trees = 270 trees.

There are 270 peach trees.

On the first day, 220 km were walked, 880 km remained, on the second day 660 km was left, 220 km remained, and on the third day, 110 km were left untraveled.

Decimeter = 25 cm, decimeter = 36 cm, cuboid oil drum volume = 25 * 25 * 36 = 22500 cubic centimeters = 22500 ml, 22500 750 = 30 bottles.

A: It can be filled with 30 bottles.

1100 * (1 = 1 5) = 880,880 * (1-3 4) = 220,200 * (1-1 2) = 110 km.

There are still 110 kilometers left.

From 1 year old, calf age, mom age, 31 years old are just divided into equidistant three segments, so.

Content from users: Front-line expert teachers.

Hello! What problem are you trying to solve.

What do you want to solve the problem?

1. The sum of two people's speed = 1200 12 = 100 (m min) and the small rigid speed 100-48 = 52 (m min).

2. Their age sum this year is 27-3*2=21

Younger brother age = 21 (1+2) = 7

Brother age = 21-7 = 14

1.Let Xiaogang walk xm per minute, then you get:

48x12+12x=1200

Solution: x=52

2.If the younger brother is x, then the elder brother is 2x, x+3)+(2x+3)=27

Solution: x=7

So the elder brother's age is 2x=14

(1) Set Xiaogang to walk x meters per minute on average.

12x(48+x)=1200

Solution x = 522) If the younger brother is x years old this year, then the elder brother is 2x years old.

2x+3）+x+3=27

x=7 brother 2x7=14

The elder brother is 14 years old and the younger brother is 7 years old.

m) 1200-576 = 624 (m).

624 12 = 52 (m).Xiao Gang walks an average distance per minute).

21 (2+1)=21 3=7 (years).Brother 7x2 = 14 (years).Brother.

(1) 1200-12*48=624 (the distance traveled by Xiaogang in 12 minutes) Distance Time = speed.

2) Three years later, the elder brother and younger brother each added three years to the total age of 6 years 21-6=21

The younger brother is half the age of the older brother.

2 points for older brother and 1 share for younger brother.

The elder brother is 14 years old and the younger brother is 7 years old.

1.The two walked a total of 1,200 meters in 12 minutes, 100 meters per minute, minus Xiaoli's 48 meters, Xiao Gang walked 52 meters per minute.

2.If the sum of the ages in three years is 27 years old, then the sum of the ages this year will be subtracted from two 3s to be 21 years old.

If the younger brother's age is x, you get 3x = 21, so the younger brother is 7 years old and the older brother is 14 years old.

48*12 to get Xiaoli's distance, and then use 1200 to subtract 576 to get Xiaogang's distance, Xiaogang's distance divided by 12 minutes to get the speed, OK.

The elder brother is 14 years old, and the younger brother is 7 years old, in the stupidest way.

-12 times 48 = 624 (meters).

624 divided by 12 = 52 (meters).

A: Xiao Gang walks an average of 52 meters per minute. -2 times 3

21 (years old) brother: 21 divided by 3 = 7 (years old).

Brother: 7 times 2 = 14 (years).

A: My brother is 14 years old and my brother is 7 years old.

Question 2: The elder brother is 16 years old and the younger brother is 8 years old.