1.4.2 Decimals Revision, PT3 Practice

Question 5:
Calculate the value of $\frac{4}{5}+15.4÷4$ and express the answer correct to one decimal place.

Solution:

Question 6:
Calculate the value of 84 – 3(14 + 48 ÷ 6) =

Solution:
$\begin{array}{l}84-3\left(14+48÷6\right)\\ =84-3\left[14+\left(48÷6\right)\right]\\ =84-3\left(14+8\right)\\ =84-3\left(22\right)\\ =84-66\\ =18\end{array}$

Question 7:

Solution:

Question 8:

Solution:
$\begin{array}{l}\left(8.4-2.64\right)÷\frac{4}{3}\\ ={\overline{)5.76}}^{1.44}×\frac{3}{\overline{)4}}\\ =4.32\end{array}$