Percent of a number

Answer Key - Grade 7 Math Worksheet - Building Confidence

Circle the best answer, or write your answer on the line.

1. Read this first

   Ratio table

   Percent	Amount
   100	80
   25	20
   150	?

2. 1.

   Ari's young tree is 80 centimeters tall. A year later it is 150% of that height, and it is clearly showing off. How many centimeters tall is the tree now?

   120
3. 2.

   Bo read 40 pages last week. This week Bo read 130% of that, because a cliffhanger showed up. How many pages did Bo read this week?

   52
4. 3.

   Kira plants 200 seeds in the class garden, and 1.5% of them never sprout (a few seeds are shy). How many seeds never sprout?

   3
5. 4.

   Milo's goal is to jog 60 minutes this week. Milo jogs 125% of that goal and calls it a victory lap. How many minutes does Milo jog?

   75
6. 5.

   Noah's lemonade stand planned to make 60 cups. After a very thirsty crowd, it made 175% of the plan. How many cups did it make?

   105
7. 6.

   Pia's class collected 90 cans last week. This week it collected 110% of that, and the bin is overflowing. How many cans did the class collect this week?

   99
8. 7.

   180 stars decorate Tala's class show this year, which is 120% of last year's stars. How many stars decorated the show last year?

   150
9. 8.

   Zee's bike trip this week was 60 miles, which is 125% of last week's trip. How many miles was last week's trip?

   48
10. 9.

    Bo's bean sprout was 20 millimeters tall on Monday and 50 millimeters tall on Friday. Friday's height is what percent of Monday's height?

    250
11. 10.

    Esme read for 30 minutes on Monday and 60 minutes on Tuesday, because a mystery got tense. Tuesday's reading time is what percent of Monday's?

    200