Question

2)6,4-3/20 3)9,8×3/10

Answer 1

2) 6,4-3/20=6,25

3) 9,8x3/10=2,94

Answer 2

$6.4 - frac{3}{20} = frac{32}{5} - frac{3}{20} = 6 frac{1}{4} \ \ 9.8 times frac{3}{10} = frac{49}{5} times frac{3}{10} = 2 frac{47}{50}$