| 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 right" Decimal multiplication and division PPT courseware
Description
"The law of changes in the size of decimals caused by moving the decimal point to the right" Decimal multiplication and division PPT courseware
What is 5.0 4 times 10, 100, and 1000? Use a calculator to calculate and observe the decimal point position.
5.04×10=50.4 5.04 times 10, move the decimal point one place to the right
5.04×100=504 5.04 times 10 0, move the decimal point two places to the right
5.04×1000=5040 5.04 times 10 00, move the decimal point three places to the right
Flexible use
1. Write the number directly.
3.74×10= 7.2×100= 0.0005×1000= 36×10=
10×0.6= 100×0.18= 1000×2.1= 10×360=
2. Fill in the appropriate numbers in the brackets.
0.08×( )=0.8 0.258×( )=258
0.452×( )=45.2 0.07×( )=7
8.009×( )=80.09 0.036×( )=36
3. 0.91 meters = ( ) centimeters 0.03 square meters = ( ) square decimeters
0.24 liters = ( ) milliliters 0.65 tons = ( ) kilograms
1.8 centimeters = ( ) millimeters 2.078 kilometers = ( ) meters
4. An object weighing 1 kilogram on the earth would weigh approximately 0.16 kilograms on the moon. Objects weighing 10 kilograms, 100 kilograms and 1000 kilograms on the earth will weigh approximately how many kilograms each weigh on the moon?
0.16×10=1.6 (kg)
0.16×100=16 (kg)
0.16×1000=160 (kg)
Answer: Objects weighing 10 kilograms, 100 kilograms and 1000 kilograms on the earth will weigh approximately 1.6 kilograms, 16 kilograms and 160 kilograms respectively on the moon.
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"The law of changes in the size of decimals caused by moving the decimal point to the right" Decimal multiplication and division PPT courseware 2:
"The law of changes in the size of decimals caused by moving the decimal point to the right" Decimal Multiplication and Division PPT Courseware 2 To multiply a decimal by 10, just move the decimal point of the decimal one place to the right. To multiply a decimal by 100, just move the decimal point two places to the right. one small..
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Update Time: 2024-07-10
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