Question

answer of this questions ​

Answer 1

Answer:

$1) \: \: \frac{1}{2} \times \frac{21}{5} = \frac{21}{10} = 2.1$

.

$2. \: \: \: \: \: ( - 1) \times 0 = 0$

.

$25 \div 1000 = \frac{25}{1000} = \frac{1}{40}$