Today in class students took another look at how we can calculate a coupon discounted or sales tax added price.
Instead of calculating a 25% discount off of $400 and then subtracting to find what we will pay, we can find what 75% of $400 is and find what we will pay. One step instead of two. When calculating sales tax, we can find what 7% is on a $14.99 purchase and then add that amount to find our total, OR we can find what 107% is of $14.99 and know the total. One step instead of two. Also today students reviewed how to find the percent increase or decrease of two values: Difference x 100 = the percent increase or decrease Original
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October 2018
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