"Finding the approximate number of a decimal" PPT courseware on the meaning and properties of decimals

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Jiangsu Education Edition Fifth Grade Mathematics Volume 1	pptx	6 MB

"Finding the approximate number of a decimal" PPT courseware on the meaning and properties of decimals

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"Finding the approximate number of a decimal" PPT courseware on the meaning and properties of decimals

Doudou is about 0.98 meters tall.

Doudou is about 1 meter tall.

To find the approximate number of an integer, you can use the "rounding" method.

To find the approximate number of a decimal, you can also use the "rounding" method.

If you want to keep two decimal places, omit the third digit.

If you want to keep one decimal place, omit the second and third digits.

Note: When expressing approximate numbers, the 0 at the end of the decimal cannot be removed.

Find the approximate number of the following decimals.

(1) 0.256 12.006 1.098 7 (round to two decimal places)

0.256≈0.26

12.006 ≈ 12.01

1.098 7 ≈ 1.10

(2) 3.72 0.58 9.054 8 (round to one decimal place)

3.72≈3.7

0.58≈0.6

9.054 8 ≈ 9.1

Are the following statements correct? Correct the incorrect ones.

(1) 3.56 to the nearest tenth is 4. ( )

(2) 6.05 and 6.0599 are both 6.1 to one decimal place. ( )

(3) The approximate number is 6.32 with more than one decimal place. ( )

(4) 5.29 Between the natural numbers 5 and 6, it is approximately 5. ( )

(5) 0.596 to two decimal places is 0.6. ( )

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For more information about the PPT courseware "The meaning and properties of decimals to find the approximate number of a decimal", please click the "The meaning and properties of decimals ppt to find the approximate number of a decimal ppt" tag.

"Finding the approximate number of a decimal" The meaning and properties of decimals PPT courseware 2:

"Finding an Approximation of a Decimal" The Meaning and Properties of Decimals PPT Courseware 2 1. Rewrite the following numbers into numbers with units of tens of thousands or billions. 80000 = ( ) 280000 = ( ) 1200000000 = ( ) 10700000000 = ( ) 2, omit the ten thousand digit...

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"Finding the approximate number of a decimal" PPT courseware on the meaning and properties of decimals