Question

a) -6,2:3,1-(-2,1x10)

b) 2+(-4 1/2)x(-20)

c) 2x(3 1/4-[3,75])x3,5

d) 3x(-10)2^+(-3)3^

e) (-7)x(-10 2^)-(-7)

f)(-9)x(-8)-5x(-10 2^)

g)(-2,6:0,26+ 1/2x 8 2^

h) (-0,2)x(-100)- 4 1/2 x 2/3

i) (-2,7-3:10)3^x(-1)

j) (-10)x(1 1/5 - 5,5)

UWAGA !! Jak by ktos nie wiedział to 3^,2^ to jest do potęgi. !!

Bardzo mi zalezy na tym zadaniu .!

Answer 1

a) -6,2:3,1-(-2,1x10) = -2 + 21= 19

 

b) 2+(-4 1/2)x(-20) = 2 + 90 = 92

 

c)  2x(3 1/4-[3,75])x3,5 = 2 x [3,25- 3,75] x 3,5 = 2 x (-0,5) x 3,5 = -1 x 3,5 = -3,5

 

d) 3x(-10)2^+(-3)3^ = 3 x 100 - 27 = 300 - 27 = 273

 

e) (-7)x(-10 2^)-(-7) = (-7) x 100 + 7 = -700 + 7 = (-693)

 

f)(-9)x(-8)-5x(-10 2^) = 72 - 5 x 100 = 75 - 500 = (- 425)

 

g)(-2,6:0,26+ 1/2x 8 2^ = (-10)+ 1/2 x 64= (-10) + 32 = 22

 

h) (-0,2)x(-100)- 4 1/2 x 2/3 = 20 - 9/2 x 2/3 = 20- 3 = 17

 

i) (-2,7-3:10)3^x(-1) = (-2,7 - 0,3)3^ x (-1)= (-3)3^ x (-1) = (-27) x (-1) = 27

 

j) (-10)x(1 1/5 - 5,5)= (-10) x (1,2 - 5,5) = (-10) x (-4,3) = 43

Answer 2

a)...=-2+21=19

b)...=2+90=92

c)...=2x(-0,5)x3,5=-1x3,5=-3,5

d)...=3x100+(-27)=300-27=273

e)...=-7x100+7=-700+7=-693

f)...=72-500=-428

g)...-10+0,5x64=-10+32=22

h) ...20-9/2x2/3=20-3=17   ->        (9/2i 2/3 skróć)

i)...=(-2,7-,3)3^x(-1)=(-3)3^x(-1)=-27x(-1)=27

j)...=(-10)x(1i1/5-5 5/10)=(-10)x(1 2/10-5 5/10)=(-10)x(-4,3)=43