Arithmetic Grade Five

Lesson One Hundred and Forty: Tipping

You may have noticed that when you eat at a restaurant that has waitpersons, that it is customary to leave a tip. A tip is a way of showing appreciation for a service performed. There usually is no requirement that you leave a tip, but waitpersons usually expect some kind of tip (or gratuity, as it is sometimes called).

BillTipping RateTip
$44.5815% $6.69
$32.4410% $3.24
$41.9818% $7.56

The table above presents bill amounts in column one and tipping rates in column two. The third column displays the resulting tips.

Method: To calculate a tip you simply multiply the bill by the rate and round to the nearest penny. So, if you receive a bill for $44.58 and you wish to leave a 15% tip, you simply:

44.58 * .15 = 6.69

The customary tipping rate is 15%, but people often tip at higher and lower rates. Leaving no tip is known as "stiffing" the waitperson.

The easiest tipping rate to figure out is a 10% tip: 


	Bill		Rate		Tip
     ---------------------------------------------
	$20.00		10%		$2.00
	$15.50		10%		$1.55
	$16.22		10%		$1.62
	$44.56		10%		$4.46
Obviously you must round off to the nearest penny when tipping.

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