Question P6 Units and parts
Today’s problem — free all day, every step. Every day has one.
A bicycle shop increased the price of a bicycle from $650 to $780. What is the percentage increase?
Answer
The percentage increase is 20%. Check: 20% of $650 is $130, and $650 + $130 = $780, so the new price satisfies the question.
Cut one amount into equal shares. One number tells you what a share is worth.
In this one. Percentage increase compares the increase with the starting value, so the whole is the original price of $650, not the new price of $780.
A single amount is split by a ratio, a fraction or a percentage. One extra number gives you the leftover, the difference, or the value of one share.
Children match the given number to the wrong number of shares, using the whole bar when the number covers only the leftover or the difference between two people's shares.
Worked examples of all 33 patterns and skills, in a booklet you can print.