Question

Find:

(a) $\frac{1}{2}$ of (i) $24$ (ii) $46$

(b) $\frac{2}{3}$ of (i) $18$ (ii) $27$

(c) $\frac{3}{4}$ of (i) $16$ (ii) $36$

(d) $\frac{4}{5}$ of (i) $20$ (ii) $35$

Answer 1

Here, 'of ' means multiplication.

example: $\frac{a}{b}\text{of}c=\frac{a}{b}\times c$

$\left(a\right)$

$\frac{1}{2}$ of $24$

$=\frac{1}{2}\times 24$

$=\frac{1\times 24}{2}$

$=12$

(ii)

$\frac{1}{2}$ of $46$

$=\frac{1}{2}\times 46$

$=\frac{1\times 46}{2}$

$=23$

$\left(b\right)$

(i)

$\frac{2}{3}$ of $18$

$\frac{2}{3}\times 18$

$=\frac{2\times 18}{3}$

$=2\times 6$

$=12$

(ii)

$\frac{2}{3}$ of $27$

$=\frac{2}{3}\times 27$

$=\frac{2\times 27}{3}$

$=2\times 9$

$=18$

$\left(c\right)$

(i)

$\frac{3}{4}$ of $16$

$=\frac{3}{4}\times 16$

$=\frac{3\times 16}{4}$

$=3\times 4$

$=12$

(ii) $\frac{3}{4}\times 36$

$=\frac{3\times 36}{4}$

$=3\times 9$

$=27$

$\left(d\right)$

(i)

$\frac{4}{5}$ of $20$

$=\frac{4}{5}\times 20$

$=\frac{4\times 20}{5}$

$=4\times 4$

$=16$

(ii)

$\frac{4}{5}$ of $35$

$=\frac{4}{5}\times 35$

$=\frac{4\times 35}{5}$

$=4\times 7$

$=28$