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15. Rezultatul calculului:
a) 20190 + 02019 + 12019 =
b) (23 +224 +29): (8 +212 : 23 + 25) =
c) 3:34.9 – 3+ +(425 : 24 + 1) =

Răspuns :

Răspuns:

a) 20.190+2.019+12.019=22.209+12.019=34.228

b)(23+224+29):(8+212:23+25)=(247+29):(8+9,2+25)=276 : (17,2+25)=276:42,2=6.5

c) 3:34,9-3-425:24+1=0,08-3-425:24+1= -2.9-425:24+1= - 2.9-17.7+1=-20.6+1=19.6

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