What are the exercises for Primary 6? How to do 6th grade questions

Title: 1The mother squirrel picks pine nuts with a baby squirrel, picking 20 blocks a day on sunny days and only 12 pieces a day on rainy days. In the past few days, they have picked a total of 112 pine nuts, an average of 14 per day. Is it raining today in any of the past few days?

It's a chicken-rabbit problem.

You can use the hypothetical method, 112 14 = 8 days, assuming that they are all sunny days, then.

20 8 = 160 Actually, it's 112, 160-112 = 48 This is all regarded as sunny days, and more as one sunny day, 20-12 = 8 more, 48 8 = 6 days That is, if you see 6 more days, then these 6 days are rainy days.

Equation, 112 4 = 8 days.

20 8 = 160.

160-112 = 48.

20-12 = 8.

48 8 = 6 days.

Number of days to pick pine nuts: 112 14 = 8 (days).

Set: There are x days that are rainy.

12x+20(8-x)=112x=6

This is a chicken-rabbit cage problem.

Find the number of days to pick first: 112 14=8

Suppose these days are rainy days: (112-12*8) (20-12)=2, then these 2 days are eye days. Rainy days are 8-2=6

112 14=8 days 20*8=160 160-112=48 48 (20-12)=6 days Rainy 8-6=2 days Sunny day.

It's the same as the "chickens and rabbits in the same cage" method, it's easy.

Rainy days: 48 (20-12) = 6 days.

Sunny days: 8-6 = 2 days.

112 divided by 20 in 12 5 days are sunny and one day is sunny.

Number of days to pick pine nuts: 112 14 = 8 (days).

Set: There are x days that are rainy.

12x+20(8-x)=112

x=6 A: 6 days of rain.

It's OK. 112/14=8 20x+12y=112 x+y=8x=6

It's very simple: 112 14=8 20x+12y=112 x+y=8, do the rest yourself!

Ditto. Hehe, the questions in elementary school are all in line with the difficulties in junior high school.

Question 1: 700 2 = 350

Question 2. 350x5=1750

Do the math yourself.

Remember to give me a good review=。。

1) After opening tube A (15) minutes, both tubes A and B are opened at the same time. This is the depth of water (10) cm.

Because after 15 minutes, the polyline suddenly rises rapidly, indicating that the B tube is also starting to enter the water.

2) How much water is coming into the A pipe per minute?

First find the bottom area of the pool: 50 * 30 = 1500 square centimeters.

The water depth is 10cm, then the volume is 1500*10=15000 cubic centimeters.

A tube takes 15 minutes, then 15000 15 = 1000 cubic centimeters of minutes.

It's a very simple question!

The key to solving these kinds of questions is to be able to read charts and graphs!

You are now in the 6th grade of elementary school, and the ability to read pictures in high school is very, very important!

If you don't have enough in this area, be sure to strengthen it!

Let's get back to the question!

The curve is divided into two parts, and the slope (slope) is different, why?

In layman's terms, because the two pipes are not the same thick! So this is where the B tube opens. At 15 minutes, the water depth depends on the vertical coordinates, 10cm

Length 50, width 30, height 10 (water depth), multiplied, is the volume at this time, and then divided by 15 minutes, it is the amount of water per minute! Count yourself!

I don't know if you understand!

A pipe water intake per minute is divided by the total water intake time for a period of time, understand?

Question 1: Multiply by 3 and divide by (2 divided by 2) squared, and the answer is high.

Question 2: The first question: (4 squared multiplied by 3 and then multiplied by one-third of Lukai Second question: (3 squared by the socks called multiplied by 4 times and then multiplied by one-third of a good vertical one.)

Dm; 36 cubic centimeters, 48 cubic centimeters.

Didn't you do it yourself.,And I can't see the question.,My cervical spine has been cured by you.,No kidding.,Turn the picture upside down?。。。

5th grade + 6th grade 5th grade +2 3 5th grade 75, then the fifth grade number is 45.

6th grade 2 3 5th grade 2 3*45 30 people.

Dongdong's age is 48 (5-1)=12 years old, and grandma's age is 48+12=60 years old.

Denominator = 1-1 2+1 3-1 4+1 5-1 6......+1/99-1/100

Molecule = 1 102 + 1 104 + 1 106 ++1/200

Numerator by denominator = 1 2

This is a high school math problem.