| Category | Format | Size |
|---|---|---|
| Jiangsu Education Edition Fifth Grade Mathematics Volume 1 | pptx | 6 MB |
"The law of changes in the size of decimals caused by moving the decimal point to the left" Decimal multiplication and division PPT courseware
Description
"The law of changes in the size of decimals caused by moving the decimal point to the left" Decimal multiplication and division PPT courseware
Taking the group as a unit, each group randomly finds a decimal and divides it by 10, 100, and 1000 respectively. See if the change in the position of the decimal point is the same as we guessed?
1.02÷10＝0.102
1.02÷100＝0.0102
1.02÷1000＝0.00102
Can anyone explain in one sentence the pattern you discovered?
Divide a decimal by 10, 100, 1000
…Just move the decimal point of this decimal number one, two, or three places to the left…
Fill in the appropriate numbers in the brackets and tell the group what you think.
54.2÷( )＝5.42
2.17÷( )＝0.0217
3.48÷( )＝0.348
102.2÷( )＝0.1022
10÷( )＝0.1
540÷( )＝0.54
teaching objectives
1. Enable students to understand and master the rules of changes in the size of decimals caused by moving the decimal point; be able to apply the rules to correctly calculate orally the quotient of dividing a number by 10, 100, 1000...
2. In the process of exploring laws, cultivate students’ preliminary abilities of observation, comparison, induction, and generalization and their interest in actively exploring mathematical laws.
Teaching Focus and Difficulties
Enable students to understand and master the rules of changes in the size of decimals caused by the movement of the decimal point.
Keywords: Decimal multiplication and division courseware, regular courseware of decimal size changes caused by moving the decimal point to the left, Jiangsu Education Edition fifth grade mathematics PPT courseware download, fifth grade mathematics slide courseware download, decimal multiplication and division PPT courseware download, decimal point direction Download the PPT courseware on the law of changes in the size of decimals caused by left movement, in .PPT format;
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File Info
Update Time: 2024-07-11
This template belongs to Mathematics courseware Jiangsu Education Edition Fifth Grade Mathematics Volume 1 industry PPT template
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