"Division if the divisor is a decimal" Decimal multiplication and division PPT courseware

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"Division if the divisor is a decimal" Decimal multiplication and division PPT courseware

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1. What happens if the decimal point is removed from the following decimals?

32.2 Expanded to 10 times the original size 322

0.75 expanded to 100 times the original size 75

0.012 expanded to 1000 times the original size 12

2. Fill in the table and talk about the changing rules of dividend, divisor and quotient.

Dividend 16 160 1600

Divisor 4 40 400

Business 4 4 4

The dividend and divisor are expanded to the same multiple at the same time, and the quotient remains unchanged.

First convert the following divisors into integers and then calculate.

６.２１÷0.３＝（ 　）÷（）=20.7

0.21÷0.025＝（　）÷（　）=8.4

2.1６３÷0.42＝（）÷（）=5.15

0.77÷0.35＝（）÷（）=2.2

Let's summarize the calculation method, shall we?

If the divisor is a decimal, first move the decimal point of the divisor to make it an integer; move the decimal point of the divisor a few places to the right, and the decimal point of the dividend also move a few places to the right, and then perform the calculation according to the decimal division method where the divisor is an integer.

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For more information about the PPT courseware "Division with decimals, multiplication and division of decimals", please click the "Division with decimals" ppt multiplication and division of decimals ppt tag.

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Update Time: 2024-09-06

This template belongs to Mathematics courseware Jiangsu Education Edition Fifth Grade Mathematics Volume 1 industry PPT template

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