Grade 5 math problems, will help solve problems .

1）.The store shipped a total of 240 kilograms of apples and bananas, of which bananas accounted for 2 5 kilograms, how many kilograms of apples were there?

240 (1-2 5) = 144 kg.

2）.The soldier's weight is 30 kilograms, which is exactly 3 7 of Dad's weight, how many kilograms does Dad's weight weigh?

30 3 7 = 70 kg.

3）.College student Li Jian's food expenses last month were 400 yuan, in order to help poor students, he decided to save 15% of the food expenses this month, how much is his food cost this month?

400 (1-15%) = 340 RMB.

4）.How many trees were planted in the second and third groups? (The first group planted 39 trees.) (The trees planted in the second group are 12 13 in the first group.) (The number of trees planted in the third group was 11 12 in the second group.) ）

The second group 39 12 13 = 36 trees.

The third group 36 11 12 = 33 trees.

1.Apple = 240 * (1-2 5) = 144 kg.

2.Dad = 30 3 7 = 70 yuan.

3.Food = 400 (1-15%) = 340 RMB.

4.The second group 39 12 13 = 36 trees.

The third group 36 11 12 = 33 trees.

1.Apples 144 kg 2Weight 70 kg.

（1）.Xiao Ming reads a 150-page storybook, and after reading it for a few days, there are still 2 5 of the book left, how many pages has Xiao Ming read?

90 pages. 2）.There are 160 students in the physical education group of Yuying Primary School, which is 4 5 in the choir group and 3 8 in the science and technology group. How many people are in the tech group?

75 people. 3）.There are 240 apple trees in the orchard, 1 5 more than pear trees, how many apple trees and pear trees are there?

440 trees. 4）.Xiao Ming's mother bought a 20% off color TV in the home appliance supermarket, using 2400 yuan, and after a few days, **this kind of color TV was originally 75% off**, compared to how much more did my mother spend?

150 yuan. 5）.50%, 47%, children's clothing 3%)

1 .The boss has entered**94 sets, **how many sets?

100 sets. 2 .Please come up with a math problem based on the information in the figure and answer it.

**How many more sets than children's clothing?

94 sets.

Page) 2 160 4 5 200 (person) 200 3 8 75 (person 3 240 (1 1 5) 200 200 240 440 (tree) 4 2400 0 8 0 75 2250 (yuan) 2400 2250 150 (yuan).

5 (1) 94 47 50 100 (sets) 2) How many sets of children's clothing are there?

94 47 3 6 (sets).

Question 1 52 54 56 58

Question 2 10

Question III 126

Question 4 5ab

Question 502

Question 6 20 inches 10 inches.

2.The sum of the edges of these two cubes is "longer than the original cube.""The length of the edge and increase by 40 cm. Is it more than the original cube or the original cuboid?

4. ab(h+5)-abh

1. There are those who meet this condition.

Centimeter. Cm.

ab cubic centimeters.

6. The long one is 20 inches, and the short one is 10 inches.

2: Length is 10; 3: The surface area is 90; 4: Volume increase a times b times 5 cubic centimeters;

m divided by n = 5 (m, n are both non-zero natural numbers), and the greatest common factor of m and n is (n).

m and n are two non-zero natural numbers next to each other, and the greatest common factor of m and n is (1).

Divide a rectangular piece of paper 18 cm long and 12 cm wide into squares of the same size with no leftovers, each small square has a maximum side length of (6) cm, and can be divided into a minimum of (6).

Two steel pipes, A is 36 decimeters long and B is 40 decimeters long, and they are loaded into small sections of the same length with no remainder, each section is the longest (4) decimeter, and the least is cut into (19) sections.

BBB4 5 meters is confusing to you, and it has nothing to do with him, because he asked not how long each section is, and does not say what the total amount of cargo is.

I'm sure you can understand the first two questions.

Hope it helps.

1b2b 4d

Is there a problem with three, I made it out of 4 15

（1）.A harvester harvests 4-5 hectares of rice in 1 hour, then it takes (b) hours to harvest 1 hectare of rice.

a . 4/5 b . 5/4 c . 9/5

2) .Dissolve 10 g of salt in 40 g of water, the quality of the salt is the quality of the brine (b).

a . 25% b . 20% c . 80%

3) .Cut the 4 5 m long wire into 3 equivalent sections, each of which is the full length (b).

a .1 3 m b 1/3 c . 1/12 d .3 4 meters.

4）.A batch of goods was transported for the first time 3 8 tons, the second time was transported 3 8 tons, and the goods transported twice were compared, (d).

a .The first shipment of the multi-bThe second shipment of the multi-cAs much as dCan't be sure.

b b b d this year, why is the fifth grade question like this?

1 meter = 10 decimeters.

10x10x10x = 1000 square decimeters.

3x3x3=27

1000 divided by 27 = 37.

Since 1000 is divided by 27 = 37, the remaining 10 uses the advanced method = 37

After E is fg, the vertical AD, BC, and the perpendicular foot are f, g, respectively, then fg=5 can be obtained according to the trapezoidal area formula

According to the triangle ADE area = 4, the area formula can be used to find EF=2, then eg=fg-ef=5-2=3

Trapezoidal height (4+height 2=26

High = 26x2 (4+.)

Height=52 Height=5cm

The trapezoidal height is also the height of the triangular DBC.

DBC Area:

Shaded area = trapezoidal area - AED area - DBC area 26-16-4 = 6cm

The shaded area is 6cm

Step 1: Calculate the height of the trapezoid.

Step 2: Calculate the height of the triangle ade.

Step 3: Subtract the height of the triangle from the height of the trapezoid to get the height of the triangle BEC, and calculate the area of the triangle BEC.

Step 4: Subtract the area of the trapezoid (the sum of the area of the triangle ADE and the triangle BEC) and divide by 2 to get the area of the shadow.

1. If a total of x kilograms of biscuits are produced, then (solution x=200.)

That is, a total of 200 kilograms of biscuits were produced on this day, and kilograms of sugar were used.

2. (kg.)

3. According to the topic, each square meter of broad-leaved forest can absorb kilograms of CO2 per day and produce 0 073 kg of O2, so 1500 square meters can absorb: 1500x0 1 150 kg CO2 can produce oxygen: 1500x0 073 109 5 kg.

1. 18÷【

200 kg] 200 kg] 8 kg of cream and 10 kg of sugar.

1. Kilograms of cream and kilograms of sugar can make 1 kilogram of biscuits, that is, kilograms of cream and sugar can make 1 kilogram of biscuits. 18, 1*200=200 kg. The amount of cream and biscuits is 200 times the original, and the biscuits are 200 times larger, so a total of 200 kilograms of biscuits are produced.

Contains kilograms of sugar.

1. (60+40)*2=200 (m).

3, cubic meter) from the middle of the truncation of the two sides of the increase in the middle of the total square meter, so each section area of square meters, so the volume is.

Question 1: The condition of deep rice is useless. It's deliberately confusing you, this question is actually to calculate the circumference, 60 plus 60 plus 40 plus 40 equals 200m.

Question 2: Divide 660 directly by 2820, and the result is inexhaustible, so you have to round it up and keep two decimal places, which is approximately equal to. So that's 21%.

I'm sorry, but I'm only going to ask the above two questions at the moment.