Question

Please someone can check out if my answers are correct

Answer 1

up to 16 are correct
only that 10) is expected as a mixed fraction I believe, though 2 is correct, one could write it as \(\bf \cfrac{\cancel{ 20 }}{\cancel{ 10 }}\implies \cfrac{2}{1}\implies 2\implies 1\cfrac{1}{1}\)

Answer 2

number 17) is a fraction division
so, one could say \(\bf 2\frac{2}{4}\div \frac{1}{4}\implies \cfrac{2\frac{2}{4}}{\frac{1}{4}}\implies \cfrac{\frac{10}{4}}{\frac{1}{4}}\implies \cfrac{10}{\cancel{ 4 }}\cdot \cfrac{\cancel{ 4 }}{1}\)

Answer 3

18) is a fraction division as well, and is correct
\(\bf 3\frac{1}{4}\div \cfrac{1}{4}\implies \cfrac{3\frac{1}{4}}{\frac{1}{4}}\implies \cfrac{\frac{13}{4}}{\frac{1}{4}}\implies \cfrac{13}{\cancel{ 4 }}\cdot \cfrac{\cancel{ 4 }}{1}\)

Answer 4

Thanks jdoe0001 for your help