Rose Harrison and Clara Huizink Solutions for Exercise 14: Mixed practice

Find the value of the following expression:

$\frac{\left|6\right|}{-\left|12\right|}$

Find the value of the following expression:

$\left|\frac{-27}{-6}\right|$

Find the value of the following expression:

$\left|-\frac{2}{5}\right|\times \left|\frac{9}{-8}\right|$

Find the value of  $\left|\frac{1}{12}\right|\times \left|-\frac{144}{5}\right|$

Find the value of the following expression:

$\left|\frac{-56}{7.2-8}\right|$

Find the value of the following expression:

$\frac{\left|15\right|\times |-3|}{|4-6.25|\times |7-3|}$

The exact length of a bent stick is $22.2 \mathrm{cm}$. Daniel measured it with a straight ruler and estimated its length to be $21.5 \mathrm{cm}$. Find the percentage error of his estimate. [Enter the value excluding percentage symbol correct up to two decimal places].

Soraya bought $3$ meters of ribbon. When she measured it, she found there were $3.15$ meters of ribbon. Find the percentage error in the $3$ meter measurement.