Question

All of number one thank you

Answer 1

I'm going to divide number one to 6 parts
1. $\frac{4}{10}$ = $\frac{40}{100}$
2. $\frac{7}{10}$ = $\frac{70}{100}$
3. $\frac{2}{10}$ = $\frac{20}{100}$
4. $\frac{9}{10}$ = $\frac{90}{100}$
5. $\frac{18}{10}$ = $\frac{180}{100}$
6. $\frac{26}{10}$ = $\frac{260}{100}$

because to make the denominator to 100, you need to multiply 10 by 10 which is 100.
and because you multiply 10, you also have to multiply the numerator by 10.
EXAMPLES: $\frac{3}{10}$ = $\frac{3}{10}$ × $\frac{10}{10}$ = $\frac{30}{100}$

Answer 2

4/10= 40/100
2/10=20/100
7/10=70/100
9/10=90/100
18/10=180/100=1 4/5
26/10=260/100=2 3/5