Question

Diego measured the length of a pen to be 22 cm. The actual length of the pen is 23 cm. Which of these is closest to the percent error for Diego's

measurement?
4.3%
4.5%
95.7%
104.5%

Answer 1

Answer: 4.3%

Explanation:

His accuracy was 22/23 which, as a percentage, is somewhere around 95-96%

To find his percentage error, you would do 1 - 22/23 (or the decimal- whichever you prefer)

1 - 22/23 ≈ 4.3% (as a decimal, it would be approximately 0.043)

If you're allowed to use a calculator, I recommend Desmos Scientific Calculator

I hope this helps!