Question

1. (1-2+3-4) : 2 =

2. (-45) : (3-8) + (-2) · 2 =

3. 13 + 24 : (-2) =

4. 25 : (-5) - (2-7) =

5. (-1) la puterea 4 + 2 · (-1) la puterea 3

6. (-2) la puterea 2 - (-2) la puterea 3 + 3 la puterea 2

7. 2 la puterea 8 : (-2) la puterea 6 - (-5) la puterea 0

8. 1 supra 12 - 5 supra 18 + 1 supra 9

Answer 1

1)

(1-2+3-4):2=

-2:2=

-1

2)

(-45):(3-8)+(-2)×2=

-45:-5-2×2=

9-4=

5

3)

13+24:(-2)=

13+24:-2=

13-12=

1

4)25:(-5)-(2-7)=

25:-5-(-5)=

-5-(-5)=

-5+5=

0

5)

(-1)⁴+2×(-1)³=

1+2×(-1)³=

1+2×-1³=

1+2×-1=

1-2=

-1

6)

(-2)²-(-2)³+3²=

4-(-8)+9=

4+8+9=

12+9=

21

$7) \\ \\ {2}^{8} : {( - 2)}^{6} - {( - 5)}^{0} = \\ \\ {2}^{8} : {2}^{6} - 1 = \\ \\ {2}^{8 - 6} - 1 = \\ \\ {2}^{2} - 1 = \\ \\ 4 - 1 = \\ \\ 3$