Question

Stabiliti daca rezultatul este numar natural:a)20% din300 b)30% din50 c)12% din40 d)25% din420 e)2% din1000 f)3% din6 2/3 g)40% din5 1/20 h)125%din4/5

Answer 1

a) 20%×300=20×300/100=20×3=60 nr natural
b)30%×50=30×50/100=30/2=15 nr natural
c)12%×40=12×40/100=24/5 nu e nr natural
d)25%×420=25×420/100=5×21=105 nr natural
e)2%×1000=2×1000/100=2×10=20 nr natural
f)3%×6=3×6/100=9/50 nu e nr natural
g)40%×51/20=40×51/100×20=51/50 nu e nr natural
h)125%×4/5=125×4/100×5=25×4/100=100/100=1 nr natural