Scrie expresile printr-un experțiu,apoi calculează

A)
(62*7)+(43*9)=434+387=821
B)
(63*36)-(63+36)=2268-99=2169
C)
(127*2)+(127*3)=254+381=635
Răspuns:
a)(62×7)+(43×9)=434+387=821
b)(63×36)-(63+36)=2268-99=2169
c)(127×2)+(127×3)=254+381=635