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People's Education Press Third Grade Mathematics Volume 1
Beijing Normal University Edition Seventh Grade Mathematics Volume 2
Qingdao Edition Seventh Grade Mathematics Volume 1
Beijing Normal University Edition Fifth Grade Mathematics Volume 1
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People's Education High School Mathematics Edition B Compulsory Course 2
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Beijing Normal University Edition Fifth Grade Mathematics Volume 2
Qingdao Edition Seventh Grade Mathematics Volume 2
People's Education Press First Grade Mathematics Volume 2
Category | Format | Size |
---|---|---|
Jiangsu Education Edition Fifth Grade Mathematics Volume 1 | pptx | 6 MB |
Description
"Multiplying Decimals by Decimals" Multiplication and Division of Decimals PPT Courseware 2
According to 12×13=156, directly write the product of the following questions.
(1)1.2 × 13 =15.6
(2)12 × 0.13 =1.56
(3)1.2× 1.3 =1.56
What is the relationship between the number of decimal places in the factors and the number of decimal places in the product?
How many decimals are there in the two factors? Count the decimal points from the right side of the product.
Let’s summarize!
How to calculate decimal multiplication?
For decimal multiplication, first calculate according to the calculation method of integer multiplication, then look at how many decimals there are in the factors, count them from the right side of the product, and click on the decimal point.
1. Put the decimal point in the sum of the following questions.
4.8×6.7= 3 2.1 6
0.48×6.7= 3.2 1 6
4.8×0.67= 3.2 1 6
0.48×0.67=0.3 2 1 6
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For more information about the "Multiplying Decimals by Decimals, Multiplication and Division of Decimals" PPT courseware, please click the "Multiplying Decimals by Decimals PPT, Multiplication and Division of Decimals PPT" tab.
"Multiplying Decimals by Decimals" Multiplication of Decimals PPT (Lesson 3):
"Multiplying decimals by decimals" Multiplication of decimals PPT (Lesson 3) Part 1: Introduction of new knowledge Think about how to calculate multiplication of decimals by decimals? Calculate the product according to the multiplication of integers. See how many decimals there are in the factors. Count them from the right side of the product and put the decimal point; the product...
"Multiplying Decimals by Decimals" Multiplication of Decimals PPT (Lesson 2):
"Multiplying decimals by decimals" Multiplication of decimals PPT (Lesson 2) Part 1: Introduction of new knowledge Think about how to calculate multiplication of decimals by decimals? 1. First calculate the product according to the multiplication of integers, and then click the decimal point; 2. When clicking the decimal point, look at how many decimals there are in the two factors,...
"Multiplying Decimals by Decimals" Multiplication of Decimals PPT (Lesson 1):
"Multiplying decimals by decimals" Multiplication of decimals PPT (Lesson 1) Part 1: Introduction of new knowledge Think about how to calculate decimals multiplied by integers? When multiplying a decimal by an integer, you can convert it into integer multiplication to calculate how many decimals there are in the factors and how many decimals there should be in the product. product..
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Update Time: 2024-10-19
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