Question

Write the following as decimal:
(a) seven-tenths
(b) Two tens and nine-tenths

Answer 1

$\text{(a) seven-tenths}=\text{7 tenths}=\frac{7}{10}=0.7$

$\text{(b) 2 tens and 9 tenths}=2\times 10+\frac{9}{10}=20+0.9=20.9$