Elenacatalinadolcu00ask
a fost răspuns

3. Efectuează:
3 x 3 + 19 - 4x4 =
6 x 4 + 3 x 4-5 =
8 x 5 - 3 x 2 + 7 =
5x9-4-3 x 7 =
36:9 + 5 x 8-13 =
64:8 + 56 : 8- 3 =
54:9: 3 + 8 =
72 : 8 x 5 - 4 =​

Răspuns :

Diana22126ask
  • 3 x 3 + 19 - 4x4 =

= 9 + 19 - 16 =

= 28 - 16 =

= 12

  • 6 x 4 + 3 x 4-5 =

= 24 + 12 - 5 =

= 36 - 5 =

= 31

  • 8 x 5 - 3 x 2 + 7 =

= 40 - 6 + 7 =

= 34 + 7 =

= 41

  • 5x9-4-3 x 7 =

= 45 - 4 - 21 =

= 41 - 21 =

= 20

  • 36:9 + 5 x 8-13 =

= 4 + 40 - 13 =

= 44 - 13 =

= 21

  • 64:8 + 56 : 8- 3 =

= 8 + 7 - 3 =

= 15 - 3 =

= 12

  • 54:9: 3 + 8 =

= 6 : 3 + 8 =

= 2 + 8 =

= 10

  • 72 : 8 x 5 - 4 =

= 9 x 5 - 4 =

= 45 - 4 =

= 41

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