3) a)
14/10 , 16/10 , 18/10
b) 1/1 , 3/3 , 5/5 , 7/7 ,9/9 deci 5 fractii
1)
a)362×2+64÷8= 724+8= 732
209×3-6×6÷6= 627-36÷6 =627-6= 621
123×12+64÷8÷2=1476+4=1480
303×3-124×2+72÷9=909-248+8=661+8=669
b)(9×10)-(5×10+5×7)=90-(50+35)=90-85=5
36:9+(3×8-8×2)= 4+(24-16)=4+8=12
(36-6×6)×(123+63÷7)=(36-36)×(123+63÷7)=0×(123+63÷7)=0
(45÷5+12)÷7÷3=(9+12)÷7÷3=21÷7÷3=3÷3=1
