24 To The Nearest Tenth

� 2004  Rasmus ehf

Rounded numbers (Approximation)

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Lesson ane.

=   means "the aforementioned as" or "is equal to".

   means "about the same as" or "approximately".

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Rounding to the nearest ten

Let'due south expect at the number line. Nosotros see that the number 24 is closer to twenty than to 30.

24 20

Rounding to the nearest x

Here nosotros run across that the number 27 is closer to xxx than to 20.

27 xxx

Rounding to the nearest ten

Here we cannot see if 25 is closer to twenty than to xxx.

25 30

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Rules for rounding numbers.

If the digit following the rounding identify ends in 0, 1, two, 3, or 4, we round down.

24 xx Round down

If the digit post-obit the rounding identify ends in 5, half dozen, vii, 8, or 9, we round up.

25 xxx Round upwards

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Review the place values:

Decimal places come up after the decimal point. (to the right of the decimal betoken)

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Instance ane:

Round 348.537  to the nearest hundred.	When 0, 1, 2, 3 or 4 come up after the rounding place we, round downward.
iii 4 8.537 300

Example 2:

Circular 348.537 to the nearest ten.	When v, 6, 7, viii or nine come subsequently the rounding place, nosotros round upwardly.
34 8 . 537 350

Example 3:

Circular 348.537 to the nearest one.	When 5, half-dozen, vii, viii or ix come after the decimal signal, we round up.
348. 5 37 349

Instance 4:

Round 348.537 to the nearest tenth (one decimal place).	When 0, 1, two, 3 or four come later on the rounding place, we circular down.
348.v three 7 348.5

Instance five:

Round 348.537 to the nearest hundredth (2 decimal places).	When 5, 6, seven, viii or 9 come up afterwards the rounding identify, nosotros round upwards.
348.53 7 348.54

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Exercise these methods then endeavor Quiz 1 on Rounding numbers.
P.South. Remember to fill in your Bank check list as you get through the exercises and quizzes.

24 To The Nearest Tenth,

Source: http://www.rasmus.is/uk/t/M/st22k01.HTM

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