Question

Разделить 77,95 на 0,625.быстрее

Answer 1

$\dfrac{77.95}{0.625} = \dfrac{77.95 \times 1000}{625} = \: \dfrac{77950}{625} = \dfrac{62500 + 15450}{625} = \dfrac{62500 + 6250 + 6250 + 2950}{625} = 100 + 10 + 10 + \dfrac{2500+ 450}{625} = 120 + 4 + \dfrac{450}{625} = 124 \: \dfrac{90}{125} = 124 \: \dfrac{18}{25} = 124.72$