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Category | Format | Size |
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Qingdao Edition Fifth Grade Mathematics Volume 2 | pptx | 6 MB |
Description
"Campus Art Festival" PPT courseware 9
Basic properties of fractions:
When the numerator and denominator of a fraction are multiplied or divided by the same number (except zero), the magnitude of the fraction remains unchanged.
Question: When the numerator of 2/3 is multiplied by 4, how should the denominator change so that the size of the fraction remains unchanged? What is the size of the fraction after the change?
After asking students to think independently, discuss what you did in the group?
Question: Multiply the numerator of two-thirds by 4. How should the denominator change so that the size of the fraction remains unchanged? What is the size of the fraction after the change?
Using the basic properties of fractions, the numerator and denominator are multiplied by 4 at the same time, and the size of the fraction remains unchanged.
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"Campus Art Festival" PPT courseware 8:
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"Campus Art Festival" PPT courseware 7:
"Campus Art Festival" PPT courseware 7 Create situations and ask questions In the campus art festival, students made a lot of stickers. Can you find any useful mathematical information? The 4 stickers used 1 meter long yarn. The 4 stickers used 3 discs. Based on the information, I proposed...
"Campus Art Festival" PPT courseware 6:
"Campus Art Festival" PPT courseware 6 Review the past and learn new things Reveal the topic In the last class, we learned the meaning of fractions. Can you tell the meaning of 3/4? The meaning of 3/4 is to divide unit 1 into 4 equal parts. We take three of them to account for 3/4 of the whole. In this lesson we will...
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Update Time: 2024-09-12
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