Question

1）3.5 ÷ 7 =

Explanation:

Step1: Convert decimal to fraction

$3.5 = \frac{35}{10} = \frac{7}{2}$

Step2: Rewrite division as multiplication

$\frac{7}{2} \div 7 = \frac{7}{2} \times \frac{1}{7}$

Step3: Simplify the expression

$\frac{7}{2} \times \frac{1}{7} = \frac{1}{2}$

Step4: Convert fraction to decimal

$\frac{1}{2} = 0.5$

Answer:

0.5