Rounding We do not always need to know the exact value of a number. For example, There are 1432 students at East-park School. There is about fourteen hundred.

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Presentation transcript:

Rounding We do not always need to know the exact value of a number. For example, There are 1432 students at East-park School. There is about fourteen hundred students at East- park School.

Example Round 34, 871 to the nearest 100. Round 34, 871 Look at the digit in the hundreds place. Look at the digit in the tens place. If this digit is 5 or above you give it a shove -round up. If the digit is 4 or below you let it go- or keep it the same. Solution:34871 = (to the nearest 100) Rounding whole numbers You need to write down every digit before this place.

Rounding whole numbers Complete this table: to the nearest thousand 452 to the nearest hundred to the nearest ten

to the nearest hundredth. Round Example Look at the digit in the hundredths place. We need to write down every digit up to this point. Look at the digit in the thousandths place to the nearest hundredth is 2.75 NOTE here that you don’t need to add zeros! Rounding decimals If this digit is 5 or above you give it a shove -round up. If the digit is 4 or below you let it go- or keep it the same.

Rounding to a given number of decimal places Complete this table: to the nearest whole number Round to the tenths Round to the hundredths