"Interviewing Fruit and Vegetable Club" PPT courseware 3

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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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"Interviewing Fruit and Vegetable Club" PPT courseware 2:

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Update Time: 2024-10-15

This template belongs to Mathematics courseware Qingdao Edition Third Grade Mathematics Volume 2 industry PPT template

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