Question

Perform the following arithmetic operations and express the answer in decimals: [4 MARKS]

i) $\frac{4}{10}$ - $\frac{2}{100}$ = ?
ii) $\frac{7}{100}$ + $\frac{3}{10}$ = ?
iii) $\frac{2}{10}$ x $\frac{52}{100}$ = ?
iv) $\frac{412}{100}$ x $\frac{724}{1000}$ = ?

Answer 1

Problems: 1 Mark each

i) $\frac{4}{10}$ - $\frac{2}{100}$ = $\frac{40}{100}$ - $\frac{2}{100}$ = $\frac{23}{100}$=0.38

ii) $\frac{7}{100}$ + $\frac{3}{10}$ =$\frac{7}{100}$ + $\frac{30}{100}$=$\frac{37}{100}$=0.37

iii) $\frac{2}{10}$ x$\frac{52}{100}$ =$\frac{104}{1000}$= 0.104

iv) $\frac{412}{100}$ x $\frac{724}{1000}$ = $\frac{298288}{100000}$=2.98288