Răspuns :
a) 21+7/2=28/2=14
b) 3,(3) +2,4 /2= 30/9+24/10= 516 = 516 ×1 =258=83/30
2 90 90 2 90
2
c)1/4+10/3+19/9=9+120+76 =205 : 3/1=205/108
3 3 36
d)14+21+49+30= 114 = 57/2
4 4
e) 6/9+3/9+15/90 = 105/180=21/36
3
f)125/1000+25/100+15/10+9/8= 15000+9000 = 24000×1 =24000 =
4 1000×8 8000 4 32000
4
=24/32=12/16=3/4
g) 15/90+8/100+3/9=150+72+300= 522×1 =522=261/1350
3 900 900 3 2700
3
b) 3,(3) +2,4 /2= 30/9+24/10= 516 = 516 ×1 =258=83/30
2 90 90 2 90
2
c)1/4+10/3+19/9=9+120+76 =205 : 3/1=205/108
3 3 36
d)14+21+49+30= 114 = 57/2
4 4
e) 6/9+3/9+15/90 = 105/180=21/36
3
f)125/1000+25/100+15/10+9/8= 15000+9000 = 24000×1 =24000 =
4 1000×8 8000 4 32000
4
=24/32=12/16=3/4
g) 15/90+8/100+3/9=150+72+300= 522×1 =522=261/1350
3 900 900 3 2700
3