Question

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 ​

Answer 1

1)

$2 + 8 - 3 - 5 + 15 \\ 10 + 15 \\ 25 \\ - (3 + 5) \\ - 8 \\ 25 - 8 \\ = 17$

2)

$28 + 13 + \sqrt{900} - 7 \\ 28 + 13 + 30 - 7 \\ = 64$

3)

$8 + \sqrt{64} + 12 - \sqrt{1024} \\ 8 + 8 + 12 - \sqrt{1024} \\ 8 + 8 + 12 - 32 \\ 28 - 32 \\ = - 4$

4)

$174 + 64 \times 3 - 89 \\ 174 + 192 - 39 \\ 366 - 39 \\ = 327$

$\Large\mathscr{\red{Attard}}$

Answer 2

$1) \\ 2 + 8 - 3 - 5 + 15 \\ 25 - 3 - 5 \\ 25 - 8 \\ \boxed{\boxed{\boxed{17}}}$

$2) \\ 28 + 13 + \sqrt{900} - 7 \\ 28 + 13 + 30 - 7 \\ 71 - 7\\ \boxed{\boxed{\boxed{64}}}$

$3) \\ 8 + \sqrt{64} + 12 - \sqrt{1024} \\ 8 + 8 + 12 - 32 \\ 28 - 32 \\ \boxed{\boxed{\boxed{ - 4}}}$

$4) \\ 174 + 64 \: . \: 3 - 89 \\ 174 + 192 - 89 \\ 366 - 89 \\ \boxed{\boxed{\boxed{277}}}$

atte. yrz