Question

Arme e efetue: 22,5 ÷ 70

Esqueci como calcular divisão com decimal​

Answer 1

$\LARGE\tt{}22,5 \div 70 \\ \\ \LARGE\tt{} \dfrac{45}{2} \div 70 \\ \\ \LARGE\tt{} \dfrac{45}{2} \times \dfrac{1}{70} \\ \\\LARGE\tt{} \dfrac{\cancel{45}}{2} \times \dfrac{1}{\cancel{70}} \\ \\\LARGE\tt{} \dfrac{9}{2} \times \dfrac{1}{14} \\ \\ \LARGE\tt{} \dfrac{9 \times 1}{2 \times 14} \\ \\ \LARGE\tt{} \boxed{ \dfrac{9}{28} }$

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