Urgent !!!! Dau de toate , macar cateva ex sa fie rezolvate !!!!
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Răspuns:
1.
9+15-4=20
2.
710 sau 715
3.
2/5 = 4/10 > 3/10
4.
4,32-0,6 = 3,72
5.
(18+15+9)/3 = 42/3 = 14
6.
a)753(216-196)+20×247=
753×20 + 20×247 =
20(753+247) =
20×1000=
20000
b)61,4+4=65,4
c)10,8 - 0,8=10
d)[(108:9×2-4)×9-16]:4=
[(12×2-4)×9-16]:4=
(20×9-16):4=
(180-16):4=
164:4=
41