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a)4×(-0,5)²+6×(-⅔)²=
4*0,25+6*4/9=1+8/3=1+2i2/3=3i2/3
b)(½)²+(-0,8):(-4/5)=
1/4+(-4/5)*(-5/4)=1/4+1=1 i 1/4
c)⅔+[(-⅓)²+(-⅓)²]:⅓=
2/3+(1/9+1/9)*3=2/3+2/9*3=2/3+2/3=4/3
d)(4×3/2₂-⅖²):2,2=
(4*9/4-4/25):22/10=
(9-4/25)*10/22=8 i 21/25*10/22=
221/25*10/22=442/110
2.Zapisz w postaci potęgi o podstawie 10:
a)10 ton= 10⁴kg
b)10 m= 10³cm
c)1 km= 10³m
d)1 m= 10³ mm
e)1 km= 10⁴dm
f)1 kg= 10⁴g
a) 4 x (-o,5)²+6x(-2/3)²= 4 x 0,25 + 6 x 4/9= 1 + 2 2/6 = 3 2/6
b)(½)²+(-0,8):(-4/5)=
1/4+(-4/5)*(-5/4)=1/4+1=1 i 1/4
c)2/3+[(-1/3)²+(-1/3)²]:1/3=
2/3+(1/9+1/9)*3=2/3+2/9*3=2/3+2/3=4/3
Zadanie 2
a)10 ton = 10⁴kg
b)10 m = 10³cm
c)1 km = 10³m
d)1 m = 10³ mm
e)1 km = 10⁴dm
f)1 kg = 10⁴g