estimation rounding numbers. definition to calculate approximately (the amount, extent, magnitude,...

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ESTIMATION ROUNDING NUMBERS

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Page 1: ESTIMATION ROUNDING NUMBERS. DEFINITION To calculate approximately (the amount, extent, magnitude, position, or value of something)

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Page 2: ESTIMATION ROUNDING NUMBERS. DEFINITION To calculate approximately (the amount, extent, magnitude, position, or value of something)

DEFINITION

To calculate approximately (the amount, extent, magnitude, position, or value of something).

Page 3: ESTIMATION ROUNDING NUMBERS. DEFINITION To calculate approximately (the amount, extent, magnitude, position, or value of something)

RULES FOR ROUNDING

The number ending in a digit of 4 or less the number is round down (the number stay and rest and ending with 0.

Example: 84 is rounded to 80

The number that end in a digit of 5 or more the number is round up ( the number increase by 1 and ending with 0.

Example: 165 is rounded to 200

Page 4: ESTIMATION ROUNDING NUMBERS. DEFINITION To calculate approximately (the amount, extent, magnitude, position, or value of something)

GUIDED PRACTICES

Rounding to the nearest tens the number in the ones place let you know if you round up or down.

Example: 43 → 40

Rounding to the nearest hundreds the number in the tens place let you know if you round up or down

Example: 650 → 700

Rounding to the nearest thousands place the number in the hundreds let you know if you round up or down

Example: 2399 → 2000