Lesson 07: One Hundred Percent | Unit 4: Proportional Relationships and Percentages

A city held a tree-planting event and increased the number of trees in their downtown area by 25%. Before the event, they had 48 trees. How many trees do they have now?

A city held a tree-planting event and increased the number of trees in their downtown area by 25%. Scientists have found that trees can make an area 9°F cooler. What percentage is this decrease if the peak summer temperature is usually 90°F?

A company has decreased the amount of plastic packaging on their product by 25%. If the packaging now weighs 48 grams, what did it weigh before the change?

This year, a herd of bison had a 10% increase in population. If there were 550 bison in the herd last year, how many are in the herd this year?

This year, another herd of bison had a 10% decrease in population. If there are 550 bison in the herd this year, how many bison were there last year?

A construction company used 30% more nails and screws this month than last month. If the company used 560 pounds of nails and screws last month, how much did it use this month?

Han wants to buy a $30 ticket to a game, but the pre-order tickets are sold out. He knows there will be more tickets sold on the day of the game, with a markup of 200%. How much should Han expect to pay for the ticket if he buys it the day of the game?

Noah was asked to make 32 tissue paper flowers as decorations for a party. He made 125% of that number. How many tissue paper flowers did Noah make in total?

90% of the paper flowers Noah made were used for the party. How many of Noah's flowers were used for the party?