Exploring Percent Error in Math 7

Approximate amount minus exact amount, divided by exact amount, multiplied by 100

Exact amount minus approximate amount, divided by approximate amount, multiplied by 100

Approximate amount plus exact amount, divided by exact amount, multiplied by 100

Exact amount plus approximate amount, divided by approximate amount, multiplied by 100

On the diagonal

Around the perimeter

Vertically

Horizontally

3/8 inch

4/8 inch

2/8 inch

1/8 inch

3/8 inch

2/8 inch

1/8 inch

4/8 inch

The exact value is incorrect

The approximation was too small

The measurement is invalid

The approximation was too big

4.6%

3.6%

2.6%

1.6%

1.6%

2.6%

3.3%

4.3%

4.6%

3.6%

2.6%

1.6%

It provides a relative measure of error

It does not require exact values

It is easier to calculate

It is always a smaller value

It suggests the exact value is incorrect

It indicates a larger absolute error

It means the measurement is less accurate

It shows the approximation is closer to the exact value