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a) 1/6 > 0,1
( 1/6 = 0,1(6) )
b) 0,12 < 3/20
( 3/20 = 0,15 )
c) 5/8 > 0,375
( 5/8 = 0,625 )
d) 6/5 = 1,2
( 6/5 = 12/10 = 1,2 )
e) 1,4 < 1 i 3/5
(1 3/5 = 8/5 = 16/10 = 1,6 )
2. Wykonaj działania :
a) 6,8 + 5,1 : 1,7 - 5/7 * 1 i 2/5 = 6,8 + 3 - 5/7 * 7/5 = 6,8 + 3 - 1 = 9,8 - 1 = 8,8
b) 8 i 3/4 * 1,6 + ( 2 i 1/2 : 4,5 - 1/8 ) = 8,75 * 1,6 + (5/2 * 10/45 - 1/8) =
14 + (5/9 - 1/8) = 14 + (40/72 - 9/72) = 14 + 31/72 = 14 31/72
c) 9 + [ 2 i 1/6 - ( 4/5 - 0,3 ) ] : 7/6 = 9 + [13/6 - (0,8 - 0,3)] : 7/6 =
9 + (13/6 - 0,5) : 7/6 = 9 + (13/6 - 5/10) : 7/6 = 9 + (65/30 - 15/30) : 7/6 =
9 + 50/30 : 7/6 = 9 + 5/3 * 6/7 = 9 + 10/7 = 9 + 1 3/7 = 10 3/7
d) [ 2 i 8/9 - 4/9 ] : 8 = (26/9 - 4/9) : 8 = 22/9 * 1/8 = 11/36
3. Zamień podane ułamki zwykłe na dziesiętne :
1/16 = 0,0625
1/32 = 0,03125
7/16 = 0,4375
11/125 = 0,088
3 i 1/3 = 10/3 = 3,333333333 = 3,(3)
91/125 = 0,728
66 / 40 = 1,65
29/16 = 1,8125