| Category | Format | Size |
|---|---|---|
| Jiangsu Education Edition Third Grade Mathematics Volume 2 | pptx | 6 MB |
"Simple Addition and Subtraction of Decimals" Preliminary Understanding of Decimals PPT Courseware 2
Description
"Simple Addition and Subtraction of Decimals" Preliminary Understanding of Decimals PPT Courseware 2
Use vertical calculation:
32+54= 68-27=
48+9= 25-17=
1. Align the same digits and add and subtract starting from the ones digit.
2. Whichever sum is full, you need to add 1 to the previous one, and whichever sum is not enough, you need to step back 1 and then subtract from the previous one.
discuss
1. What should we pay attention to in vertical calculation of decimal addition?
2. When calculating addition of decimals, why do we need to align the decimal points? Where should this decimal point be?
3. What are the similarities between adding integers and adding decimals?
To calculate decimal addition, first align the decimal points of the addends (that is, align the same digits), and then perform the calculation according to the calculation rules of integer addition. The decimal point in the resulting number must be aligned with the decimal point in the addend.
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For more information about the PPT courseware "Preliminary Understanding of Decimals and Simple Addition and Subtraction of Decimals", please click the "Preliminary Understanding of Decimals ppt Simple Addition and Subtraction of Decimals" ppt tag.
"Simple Addition and Subtraction of Decimals" Preliminary Understanding of Decimals PPT Courseware 3:
"Simple Addition and Subtraction of Decimals" Preliminary Understanding of Decimals PPT Courseware 3 Think about it: What are the similarities between the calculation of addition and subtraction of decimals and the calculation of addition and subtraction of integers? What should you pay attention to? When calculating addition and subtraction of decimals and addition and subtraction of integers, numbers in the same digits are...
"Simple Addition and Subtraction of Decimals" PPT courseware for preliminary understanding of decimals:
"Simple Addition and Subtraction of Decimals" Preliminary Understanding of Decimals PPT Courseware Think about it: What are the similarities between the calculation of addition and subtraction of decimals and the calculation of addition and subtraction of integers? What should you pay attention to? When calculating addition and subtraction of decimals and addition and subtraction of integers, numbers in the same digits are added together...
"Simple Addition and Subtraction of Decimals" Preliminary understanding of decimals Flash animation courseware:
"Simple Addition and Subtraction of Decimals" Flash animation courseware for preliminary understanding of decimals. This courseware helps students learn the knowledge points of simple addition and subtraction of decimals in the preliminary understanding of decimals in the form of exercises. It summarizes the knowledge points of this lesson. It is to consolidate knowledge points..
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Update Time: 2024-07-01
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