Percent increase, percent decrease and percent error
Grade 7 Math Worksheet - Challenge Me
Circle the best answer, or write your answer on the line.
After a growth spurt of 25%, Esme's bamboo plant is 60 centimeters tall. How tall was the plant before the growth spurt?
Jun lets out 20% more kite string, so the string is now 150 meters long. How long was the string before?
After 20% of its trees were cut down, Luz's park has 140 trees left. How many trees did the park have before?
Pia's band had 200 fans. The crowd grew by 20%, then shrank by 10%. How many fans are there at the end?
Tala's class has 150 pizza slices. 20% get eaten, then a delivery adds 50% more than what is left. How many slices are there at the end?
Ari's kitchen scale reads within 2% of the true mass. A bag's true mass is 250 grams. What is the largest reading the scale could show?
Bo's measuring jug is within 4% of the true amount. The true amount is 500 milliliters. What is the smallest amount the jug could show?
Esme's step counter is within 5% of the true count. The true count is 8000 steps. What is the largest count it could show?
Jun's stopwatch is within 3% of the true time. The true time is 60 seconds. What is the smallest time it could show?
x is the number of bikes at Luz's school on Monday. By Tuesday the number goes down by 10%, then up by 30%. Which expression gives the number on Wednesday?
- 0.9x
- 1.3x
- 1.17x
- 1.2x