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calculati
a)10 la suta din 250
b)15la suta din 200
c)20 la suta din 70
d)30 la suta din 240
e)12la suta din 125
f)14la duta din 150
g)120 la suta din25
h)150 la suta din 32


Răspuns :

[tex]a) \frac{10}{100} \times 250 = \frac{10}{10} \times 25 = 1 \times 25 = 25[/tex]

[tex]b) \frac{15}{100} \times 200 = 15 \times 2 = 30[/tex]

[tex]c) \frac{20}{100} \times 70 = \frac{2}{1} \times 7 = 2 \times 7 = 14[/tex]

[tex]d) \frac{30}{100} \times 240 = \frac{3}{1} \times 24 = 3 \times 24 = 72[/tex]

[tex]e) \frac{12}{100} \times 125 = \frac{12}{4} \times 5 = 3 \times 5 = 15[/tex]

[tex]f) \frac{14}{100} \times 150 = \frac{14}{10} \times 15 = \frac{14}{2} \times 3 = 7 \times 3 = 21[/tex]

[tex]g) \frac{120}{100} \times 25 = \frac{120}{4} \times 1 = \frac{120}{4} = 30[/tex]

[tex]h) \frac{150}{100} \times 32 = \frac{15}{10} \times 32 = \frac{15}{5} \times 16 = 3 \times 16 = 48[/tex]