Question

Determinati :
A) 1% din 100 D)12%din 375

B) 5% din 20 e)25% din 256
C)10% din 40 f)80%din 405
G)200%din 208 h) 350% din 72

Answer 1

$a) \frac{1}{100} \times 100 = \frac{1 \times 100}{100} = \frac{100}{100} = 1$

$b) \frac{5}{100} \times 20 = \frac{1}{20} \times 20 = \frac{1 \times 20}{20} = \frac{20}{20} = 1$

$c) \frac{10}{100} \times 40 = \frac{1}{1} \times 4 = 1 \times 4 = 4$

$d) \frac{12}{100} \times 375 = \frac{6}{50} \times 375 = \frac{3}{25} \times 375 = \frac{3}{5} \times 75 = 3 \times 15 = 45$

$e) \frac{25}{100} \times 256 = \frac{1}{4} \times 256 = \frac{1 \times 256}{4} = \frac{256}{4} = 64$

$f) \frac{80}{100} \times 405 = \frac{8}{10} \times 405 = \frac{4}{5} \times 405 = 4 \times 81 = 324$

$g) \frac{200}{100} \times 208 = 2 \times 208 = 416$

$h) \frac{350}{100} \times 72 = \frac{35}{10} \times 72 = \frac{7} {2} \times 72 = 7 \times 36 = 252$