Help solve a math problem for elementary school 3rd grade

Cucumber is 600 square meters.

Radish is 200 square meters.

Tomatoes are 400 square meters.

3,200 trees can be planted.

The total area is 40x30 1200 square meters.

Cucumber 120x1 2 60 sq.m.

Radish 1200x(1-1 2-1 3) 1200x1 6 20 sq.m.

Tomatoes 1200x1 3 40 sq.m.

This 1 3 plot of land can grow tomatoes 40x8 320 trees.

The entire plot can be planted with 1200x8 9600 tomatoes.

1, 40*30*1/2 = 600

2,40*30*(1-1/2-1/3)=200

3, 30*40*1/3=400 400*8=3200 pieces.

1, the area of cucumbers 40 * 30 * (1 2) = 6002, the area of radish 40 * 30 * (1 3) = 4003, the area of tomatoes 40 * 30-600-400 = 200 If you plant an average of 8 tomatoes, how many tomatoes can be planted in this land? 40*30*8=9600

1 cucumber: s=1 2*40*30=600m 22 radish:s tomato = ( 3*40*30=400m2 s radish = 30*40-600-400=200m2

3 Tomatoes see 2, what is the average planting of 8 tomatoes, is it 8 tomatoes per square meter, then the number of tomatoes n = 400 * 8 = 3200 (trees).

Look

The area of cucumbers is 40 * 30 * 1 2 = 600 (m2), the area of tomatoes is 40 * 30 * 1 3 = 400 (m2), and the remaining radish is 40 * 30-600-400 = 200 (m2), a total of 40 * 30 8 = 150 pieces.

1.The second basket originally had apples 143+27*2 197 (pcs).

2.It turns out that the first bag of rice is heavier than the second bag 5*2+3 13 (kg).

3.It turns out that Xiao Ming's pictures are 5*2 10 (pieces) more than Xiao Gang, and there are 42 10 32 (pieces) every two times Xiao Gang

+27+27=197

3, it turns out that Xiao Ming's number of pictures is 10 more than Xiao Gang's. So Xiao Gang has 32 more pictures.

1 If there are 143 apples in the first basket, if you take 27 apples from the second basket and put them in the first basket, the number of apples in both baskets will be the same, how many apples are in the second basket?

2 There are two bags of rice, pour 5 kg from the first bag and put it into the second bag, at this time the rice in the first bag is still 3 kg heavier than the second bag How many grams is the first bag heavier than the second bag?

2 If you give Xiao Ming's pictures 5 pictures, the two of them will have the same number of pictures It turns out that Xiao Ming has more pictures than Xiao Gang? If Xiao Ming has 42 pictures, then how many pictures does Xiao Gang have?

It turned out that Xiao Ming had 10 more pictures than Xiao Gang.

If Xiao Ming has 42 pictures, then Xiao Gang has 32 pictures.

The result is 32kg

Process: Because tail = 4

Head = tail + half of the body.

Body = Head + Tail.

So body = head + tail can decompose the head into half of the tail + body, get:

Body = tail + half of body + tail.

The tail is 4kg, two tails, which is half of the body, and four tails are the body

4 4 = 16kg (body).

Head = tail + half of the body.

In total: 4 + 12 + 16 = 32kg

It should be 32kg

From the meaning of the title, head = tail + 1 2 body, body = head + tail, then body = tail + 1 2 body + tail.

And tail = 4kg

It is 16kg

The head is 16kg-4kg=12kg

The total weight is 12kg + 16kg + 4kg = 32kg

Head = Tail + Body 2

Fish body = head + tail.

Fish head = fish tail + (fish head + fish tail) 2

Fish head = fish tail * 2 + fish tail = 12kg

Fish body = 16kg

Fish = head + body + tail = 12 + 16 + 4 = 32kg

From the meaning of the title, head = tail + 1 2 body, body = head + tail, then body = tail + 1 2 body + tail.

And tail = 4kg

It is 16kg

The head is 16kg-4kg=12kg

The total weight is 12kg + 16kg + 4kg = 32kg

Head, half, body, tail.

Body = Head + Tail.

So the body is half and the tail is two.

or a half-body with two tails.

Body 4 tail 4 4 16 kg.

Head and tail 16 2 4 12 kg.

The width of the drawing remains the same, the length is increased by 50 meters, and the increased area is the width * 50 = 2500, and the original width is 50 meters;

In the same way, the length remains the same, the width is increased by 50 meters, and the increased area is the length * 50 = 3000, and the original length is 60 meters.

This land originally covered an area of 50*60=3000 square meters.

The width remains the same, the length is increased by 50 meters, and the area is increased by 2,500 square meters ==> the original rectangular ground width = 2,500 50 = 50 meters.

The length remains the same, the width increases by 50 meters, and the area increases by 3,000 square meters ==> The length of the original rectangular ground = 3,000 50 = 60 meters.

Fifty meters in length, 2500 in area, 50 in width, 50 in width, 3000 in area, 60 in length, 50 in area, 3000 in width, 50x60=3000

2500 50 = 50 to get the width, 3000 50 = 60 to get the length, the original area of 50 * 60 = 3000 square meters.

Wouldn't it be nice if you drew a picture for him... The original ground has an increased rectangular area of 2500 and a length of 50, so the width is 50. Analogy.