"Multiplying Decimals by Decimals" Decimal Multiplication PPT Courseware 3

"Multiplying Decimals by Decimals" Decimal Multiplication PPT Courseware 3

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"Multiplying Decimals by Decimals" Decimal Multiplication PPT Courseware 3

If the multiplied product does not have enough decimal places, add 0 in front and then add the decimal point.

Students, use your diligent pencils to calculate the following questions correctly!

3.7×4.6=17.02

0.29 ×0.07=0.0203

6.5×8.4=54.60

What if the product ends with 0?

Students, can you discuss and exchange the following questions together?

When calculating decimals multiplied by decimals

What to do first? Calculate the product by multiplying integers

What to do again? Add decimal point to points

How to determine the position of the decimal point? To see how many decimals there are in the factors, count them from the right side of the product and put the decimal point.

What should I do if the number of decimal places in the product is not enough? pad with 0 in front

What should I do if there is a 0 at the end of the product? Click the decimal point first, then remove the 0

Without calculation, determine how many decimal parts there are in the product.

47 ×0.05 ( ) 6.9 ×0.38 ( )

4.2 ×1.8 ( ) 4.08 ×0.08 ( )

0.9 ×0.7 ( ) 6 ×0.07 ( )

I will judge

1. When two decimals are multiplied by one decimal, the product must be three decimals. ( )

2. When an integer is multiplied by a decimal, the product is smaller than this number. ( )

3. The product of decimal multiplication may be an integer. ( )

4. 15 × 0.4 means finding four-tenths of 15. ( )

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For more information about the PPT courseware "Multiplying Decimals and Multiplying Decimals by Decimals", please click the Multiplying Decimals ppt Decimals Multiplying Decimals ppt tag.

"Multiplying Decimals by Decimals" Decimal Multiplication Flash Animation Courseware 2:

"Multiplying Decimals by Decimals" Multiplying Decimals Flash Animation Courseware 2 This courseware is a teaching material for decimal multiplication in the second unit of the fifth grade mathematics volume of the Hebei Education Edition. The content is vivid and vivid. Please download it! Keywords: decimal multiplication teaching courseware,...

"Multiplying Decimals by Decimals" Decimal Multiplication PPT Courseware 4:

"Multiplying Decimals by Decimals" Decimal Multiplication PPT Courseware 4 Teaching Objectives 1. Combined with specific examples, experience the process of using existing knowledge to solve problems and learn the calculation method of multiplying decimals by decimals. 2. Understand and master the calculation methods of decimal multiplication, and be able to correctly multiply decimals..

"Multiply decimals and their estimation" Decimal multiplication PPT courseware 2:

"Multiply decimals by decimals and their estimation" Decimal Multiplication PPT Courseware 2 Tell us how many decimals the following product is: 0.194.2 5.161.3 6.370.28 24.63.2 Calculate each of the following questions orally: 0.63 490.1 80.125 500.3 3.770 1.60.2 30.254 7.60.8+0.27..

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