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Fractions & Decimals What is a Fraction? This pizza has been cut into three equal parts. We call these thirds. A third is written as The whole pizza cut into three equal parts gives us three thirds. Think about just one slice. We can write this using a fraction Think about two slices. Two slices is two thirds. We can write two thirds as The top number of the fraction tells us how many slices we have We call it the numerator The bottom number tells us how many parts in the whole pizza We call it the denominator Fractions of a whole What if you have a cake cut into six equal parts? Here are all the fractions you can make 1 6 Reading and writing decimal numbers You can see examples of decimal numbers being used everytime you walk down the High Street. For example banks use them when quoting the current rate of interest or currency exchange rates Each of these three numbers below has the same three digits, in the same order, yet they are all different. Take a good look at them 625 62.5 6.25 625 62.5 6.25 A B C A is a whole number, and would be read as six hundred and twenty five B contains a decimal point, marking the end of the whole number, and would be read as sixtytwo point five C also contains a decimal point, and would be read as six point two five (not six point twenty five) The next in the series would be written 0.625. It contains no whole number, and it is usual to begin with a zero before the decimal point in this case. It would be read as zero point six two five The decimal point marks the end of the whole numbers. Digits on the left of the point are whole numbers Digits on the right of the point are decimal fractions (fractions of a whole number). Where there is no whole number, begin with a zero in the units position. Digits after the decimal point are usually read individually. 62.5 Writing numbers Twentyseven point five is written 27.5 Nine point zero six is written 9.06 One hundred and one point zero zero two is written 101.002 6 [...]...The decimal point marks the end of the whole numbers. Digits on the left of the point are whole numbers Digits on the right of the point are decimal fractions (fractions of a whole number). Where there is no whole number, begin with a zero in the units position. Digits after the decimal point are usually read individually. 62.5 Writing numbers Twentyseven point five is written 27.5 ... parts in the whole pizza We call it the denominator Fractions of a whole What if you have a cake cut into six equal parts? Here are all the fractions you can make 1 6 Reading and writing decimal numbers... Digits on the left of the point are whole numbers Digits on the right of the point are decimal fractions (fractions of a whole number). Where there is no whole number, begin with a zero in the units