Percent Change And Area Problems Worksheet

8 problems

Percent change is a measure of how much a value has changed over time. It is calculated as: (|(new value - old value) / old value|) x 100%

The percent change is expressed as a percentage, and it can be positive or negative. A positive percent change means that the new value is greater than the old value, and a negative percent change means that the new value is less than the old value.


Grade 7

For example, if the old value of a quantity is 50 and the new value is 55, the percent change is: (|(55 - 50) / 50|) x 100% = (5/50) x 100% = 10%

The percent change can be used to evaluate the change in a value over time, such as in stock market prices, population growth, and inflation.

Area, on the other hand, is the amount of space inside a two-dimensional object, like a rectangle or a circle. For example, the area of a rectangle can be calculated by multiplying the length by the width, and the area of a circle can be calculated by multiplying π (pi) by the radius squared.

Teaching Percent change and area problems Easily


  1. Guided practice: Provide students with guided practice problems using worksheets that involve percent change and area, starting with simple examples and gradually increasing the difficulty level.
  2. Formative assessment: Continuously monitor student progress by using formative assessments such as quizzes, exit tickets, and class discussions. This can help identify areas where students need additional support..
  3. Emphasize the importance: Emphasize the importance of percent change in evaluating the change in a value over time and how area is used to measure the space inside two-dimensional objects


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