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calculeaza in doua moduri a) 3*10*2 ,b)3*(20plus3) , c) 2*(32-2) ,d) (3* 30) plus ( 3*2) , e) (2*40) - (2*30) ,f) 100*2*4

Răspuns :

a) 3*10*2=30*2=60 sau 3*2*10=6*10=60
b) 3x(20+3)=3x23=69 sau 3x20+3x3=60+9=69
c) 2x(32-2)=2x30=60 sau 2x32-2x2=64-4=60
d) (3x30)+(3x2)=90+6=96 sau 30x3+3x2=90+6=96
e) (2x40)-(2x30)=80-60=20 sau (40x2)-(30x2)=80-60=20
f) 100x2x4=200x4=800 sau 100x4x2=400x2=800