Qingdao Edition Third Grade Mathematics Volume 2

Qingdao Edition Third Grade Mathematics Volume 2

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"Interviewing Fruit and Vegetable Club" PPT courseware 3

How many boxes of apples of each variety are there on average?

You can make an estimate first: there are 20 boxes of each variety, and 8 varieties are 20×8=160, so 184 is regarded as 160, so 184÷8≈20. There are actually 184 boxes in total, so the number should be larger than 20.

You can also use pen calculation: if the quotient of 1 in the hundreds place divided by 8 is not enough to reach 1 hundred, what should I do? If the highest digit is not enough to quotient 1, you can first look at the first two digits of the dividend and divide 18 tens by 8. The quotient is two tens and the quotient in the tens digit is 2.

The pen arithmetic division method I learned before was enough to divide with the hundreds digit of the dividend. However, the division method I learned today is not enough to divide with the hundreds digit of the dividend.

Summarize

To divide a three-digit number by a one-digit number, first divide the number in the hundreds digit by the divisor. If the quotient is not enough to be 1, divide it with the first two digits. The quotient must be written in the tens digit.

What speed was Uncle Li driving?

423÷6=72 (kilometers per hour)

Answer: Uncle Li’s driving speed is 72 kilometers per hour

The distance traveled in 1 hour is the speed of the car.

Speed ​​= distance ÷ time

distance = speed × time

Time = distance ÷ speed

Talk about harvest

What should you pay attention to when dividing a three-digit number by a one-digit number?

summary

Look at one digit of the divisor,

One person is not enough to see two people.

Except whoever you look at,

The divisor is the sister and the remainder is the sister.

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For more information about the PPT courseware "Interviewing the Fruit and Vegetable Club", please click the "Interviewing the Fruit and Vegetable Club" ppt tag.

"Interviewing Fruit and Vegetable Club" PPT courseware 5:

"Interviewing Fruit and Vegetable Club" PPT courseware 5 1. Situation introduction We received 96 customers in 3 days. How many customers do you receive on average per day? A sales contract worth 4.8 million yuan was signed in 4 days. How many sales contracts worth tens of thousands of yuan are signed on average every day? What mathematical information can you learn from the graph? ..

"Interviewing Fruit and Vegetable Club" PPT courseware 4:

"Interviewing Fruit and Vegetable Club" PPT courseware 4 1. Scenario introduction Produce 420 bottles of dry red wine in 3 minutes. How many bottles of dry red wine are produced per minute on average? What mathematical information do you know from the picture? What questions can you ask based on this information? 2. Cooperation and exploration...

"Interviewing Fruit and Vegetable Club" PPT courseware 2:

"Interviewing Fruit and Vegetable Club" PPT courseware 2 1. Situation introduction Produce 428 bottles of juice in 4 minutes. How many bottles of juice are produced per minute on average? 204 kilograms of preserved fruit can be produced in 2 hours. How many kilograms of preserved fruits are produced per hour on average? Question: What mathematical information do you know from the graph...

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Qingdao Edition Third Grade Mathematics Volume 2 青岛版三年级数学下册(1)青岛版三年级数学下册(2)

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