Răspuns :
A) 6/10
b)20+5+ 1/10+ 7/100 = 26/10 + 7/100 = 28/ 110
c) 400 + 30 + 2 + 2/10 + 3/100+ 4/1000= 432 + 5/110 + 4/ 1000= 438/110 + 4/1000 = 442/ 1110
d) 700 + 1 + 7/10 + 0/100 + 1/1000 = 701 + 7/110 + 1/1000 = 708/ 110 + 1/1000= 709/ 1110
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