lista de exercícios-expressoes numérica
1) 2+8-3-5+15
2) 28+13+√900-7
3) 8+√64+12-√1024
4)174+64x3-89
resposta com conta armada pfvr
1) 2+8-3-5+15
2) 28+13+√900-7
3) 8+√64+12-√1024
4)174+64x3-89
resposta com conta armada pfvr
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1)
[tex]2 + 8 - 3 - 5 + 15 \\ 10 + 15 \\ 25 \\ - (3 + 5) \\ - 8 \\ 25 - 8 \\ = 17[/tex]
2)
[tex]28 + 13 + \sqrt{900} - 7 \\ 28 + 13 + 30 - 7 \\ = 64[/tex]
3)
[tex]8 + \sqrt{64} + 12 - \sqrt{1024} \\ 8 + 8 + 12 - \sqrt{1024} \\ 8 + 8 + 12 - 32 \\ 28 - 32 \\ = - 4[/tex]
4)
[tex]174 + 64 \times 3 - 89 \\ 174 + 192 - 39 \\ 366 - 39 \\ = 327[/tex]
[tex]\Large\mathscr{\red{Attard}}[/tex]
[tex]1) \\ 2 + 8 - 3 - 5 + 15 \\ 25 - 3 - 5 \\ 25 - 8 \\ \boxed{\boxed{\boxed{17}}} \\ [/tex]
[tex]2) \\ 28 + 13 + \sqrt{900} - 7 \\ 28 + 13 + 30 - 7 \\ 71 - 7\\ \boxed{\boxed{\boxed{64}}} \\ [/tex]
[tex]3) \\ 8 + \sqrt{64} + 12 - \sqrt{1024} \\ 8 + 8 + 12 - 32 \\ 28 - 32 \\ \boxed{\boxed{\boxed{ - 4}}} \\ [/tex]
[tex]4) \\ 174 + 64 \: . \: 3 - 89 \\ 174 + 192 - 89 \\ 366 - 89 \\ \boxed{\boxed{\boxed{277}}} \\ [/tex]
atte. yrz