Question

VA ROG CAT DE RAPID SE POATE, DAU COROANA

Answer 1

a) 7/3×0,3+7/2×0,2-1/6×0,6=

7/3×3/10+7/2×2/10-1/6×6/10=

21/30+14/20-6/60=

42/60+42/60-6/60=

84/60-6/60=

78/60=39/30=13/10=1,3

b) 5/4×0,15-0,(3)×0,9+0,2(7)×0,18=

5/4×15/10-3/9×9/10+25/90×18/10=

75/40-27/30+450/900=

75/40-9/10+1/2=

75/40-36/40+20/40=

39/40+20/40=59/40=1,475

c) 21/9×1/10+18/25×15/9-32 :8=

21/90+270/225-4=

21/90+54/45-4=

21/90+108/90-360/90=

129/90-360/90=231/90=2,5(6)