Transcrieti exercitiile cu cifre arabe si verificati calculele: a)XC-XL =L , LX-XL=C, b)XC+XC=CC MD-CD=MC c) (lV x V)+(XL x ll)=C , (l x lX)-( lX-l)=l

1
a) 90-40=50
b) 60-40=100
2 ( b ) - a) 90+90= 200
b) 1500-400=1100
3 (c) -a) (4*5)+(40*2)=100
b) (1*9)-(9*1)=1
multumesc Valleria

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2014-10-04T18:42:42+03:00