Question

Ułamki ;D

1. a) 5 i 1/8 + 7,125 =

b) 30/25 - 1,2 =

c) 30,25 - 1/2 =

d) 4,6 - 2 i 2/3 =

e) 8,625 - 2 i 3/8 =

2.

a) podnieś do kwadratu liczby: 1,2 ; 5/11 ; 1 i 3/7 ; 0,25

b) podnieś do sześcianu liczby: 2,1 ; 4/9 ; 2 i 1/5 ; 0,01 =

Answer 1

1.

a) 5 i 1/8 +7,125 = 5 i 1/8 + 7 i 1/8=12 i 2/8= 12 i 1/4

b)30/25 - 1,2 = 6/5 - 12/10 = 6/5 - 6/5 = 0

c)30,25 - 1/2 = 30,25 - 0,5 = 29,75

d)4,6 - 2 i 2/3 = 4 i 6/10 - 2 i 2/3 = 4 i 18/30 - 2 i 20/30 = 3 i 48/30 - 2 i 20/30 = 1 i 18/30 = 1 i 3/5

e)8,625 - 2 i 3/8 = 8 i 5/8 - 2 i 3/8 = 6 i 2/8 = 6 i 1/4

 

2.

a) 1,2^2 = 1,2 * 1,2 = 1,44

    (5/11)^2=(5/11)*(5/11)=25/121

    (1 i 3/7)^2 = (10/7)^2=100/49=2 i 2/49

    0,25^2 = 0,25*0,25 = 0,0625

b)2,1^3 = 2,1*2,1*2,1 = 9,261

   (4/9)^3 = 4/9 * 4/9 * 4/9 = 64/729

   (2 i 1/5)^3 = (11/5)^3 = 1331/125 = 10 i 81/125

   0,01^3 = 0,01*0,01*0,01 = 0,000001