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zad32 .
a) 1,245 + 0,75 = 1,995
b) 4,35 - 0,015 = 4,335
c) 0,875 - 0,78 = 0,095
d ) 5,4 - 1,25 = 4,15
e ) 1,4 - 0,85 + 3,35 = 3,9
f ) 3,12 - (0,8 - 0,25 ) = 3,12 - 0,55 = 2,57
zad 33 Odp.
a ) 12/10 + 5/6 = 12/10 + 12/10 = 24/10 = 2 4/10 = 2 2/5
b ) 48/10 - 4/3 = 144/30 - 40/30 = 104/30 = 3 14/30 = 3 7/15
c ) 333/10 + 1/3 - 125/100 = 9990/300 + 100/300 - 375/300 = 9715/300 = 32 115/300 =
32 23/60
d ) 225/100 - 4/3 -15/10 = 675/300 - 400/300 - 450/300 = (-175)
a )1,245 + 3/4 = 1,245 + 0,75 = 1,995
b)4,35 -3/200 = 4,35 - 0,015 = 4,335
c )7/8 - 0,78 = 0,875 - 0,78 = 0,125
d )5,4 - 5/4 = 5,4 - 1,25 = 4,15
e )1 2/5 - 0,85 + 3 7/20 = 1,4 - 0,85 + 3,35 = 0,55+3,35 = 3,9
f ) 3 3/25 - (0,8 - 1/4 )
Zadanie 2
a ) 1,2 + 5/6 = 1 2/10 + 5/6 = 1 1/5 + 5/6 = 1 6/30 + 25/30 = 1 31/30 = 2 1/30
b) 4,8 - 1 1/3 = 4 8/10 - 1 1/3 = 4 24/30 - 1 10/30 = 3 14/30
c)33,3 + 1/3 - 1,25 =33 3/10 + 1/3 - 1 25/100 = 33 3/10 + 1/3 - 1 1/4 = 33 36/120 + 40/120 - 1 30/120 = 33 76/120 - 30/120 = 33 46/120 = 33 23/60