Răspuns:
a) 41x13x12=6396 rotunjire la sute=6400
b) 315x(528-499)=9135 rotunjire la sute=9100
c)213x13x2=5538 rotunjire la sute=5500
d) 816x(19-17)=1632 rotunjire la sute=1600
e) (21+35)x107=5992 rotunjire la sute=5900
f) 215x(45-23)=4730 rotunjire la sute=4700
g) (31+29)x49=2940 rotunjire la sute=2900
h) (17+83)x53=5300 rotunjire la sute=5300
i) (19+24)x62=2666 rotunjire la sute=2700
Explicație pas cu pas:
La rotunjiri nu sunt sigura