Question

Liczby całkowite i wymierne .
1.Oblicz .
2/3-1/2
-----------
3/4-2/3

b)6/5-2/7
------------
2/5+2/3

c)1 1/2-2,75
------------------
1 5/6-2 1/12

d)1,25+27/8
-----------------
1 5/16+3/8

e) 8-(-2 1/2)
-------------
1 4/5:14/15-2

f) 3/5:9/10-2 1/5:(-1.1)
--------------------------------
(2 1/3-3/4)*2 2/3

2.Liczby niewymierne.
Uzupełnij dwiema kolejnymi liczbami naturalnymi:
a) < \sqrt{11 <
b) < \sqrt{27} <
c) < \sqrt{82} <
d) < \sqrt{140}

Answer 1

2/3-1/2=4/6-3/6=1/6
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3/4-2/3=9/12-8/12=1/12
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6/5-2/7=42/35-10/35=32/35
------------
2/5+2/3=6/15+10/15=16/15=1 i 1/15
-------------
1 1/2-2,75=1,5-2,75=-1,25
-----------------
1 5/6-2 1/12=1 i 10/12- 2 i 1/12=-3/12
-------------
1,25+27/8=1 i 2/8 + 27/8 = 10/8+27/8=37/8=4 i 5/8
 -----------------
1 5/16+3/8=21/16+6/16=27/16=1 i 11/16
-----------------
8-(-2 1/2)=8+2 i 1/2=10 i 1/2
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1 4/5:14/15-2=9/5 : 14/15 - 2 = 9/5 * 15/14 - 2 = 27/14 - 2 = -1/14
-------------

2) 
a)  3< \sqrt{11 <4
b) 5< \sqrt{27} <6
c) 9< \sqrt{82} < 10
d) 11< \sqrt{140}<12