Oblicz:
a. 4 2/5 +0,15
b. 12 1/4 - 6,7
c. 9,25 - 5 1/12
d. 14 4/7 - 2,75
e. 7 2/5 +3 3/4 - 5,7
f. 8 1/2 - 6,32 + 2 3/8
g. 6 1/3 - (4,12 + 2,18)
h. 5,68 - 1 3/14 + 2,12 - 5 9/14
i. 5,8 - 5 8/9 + 3,4 - 3 3/27
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a. 4 2/5 +0,15=4,4+0,15=4,55
b. 12 1/4 - 6,7=12,25-6,7=5,55
c. 9,25 - 5 1/12=9 1/4-5 1/12=9 3/12-5 1/12=4 2/12
d. 14 4/7 - 2,75=14 4/7- 2 3/4=14 16/28-2 21/28=13 44/28-2 21/28=11 23/28
e. 7 2/5 +3 3/4 - 5,7=7,4+3,75-5,7=11,15-5,7=5,45
f. 8 1/2 - 6,32 + 2 3/8=8,5-6,32+2,375=4,555
g. 6 1/3 - (4,12 + 2,18)=6 1/3-6,3=6 1/3- 6 3/10=6 10/30- 6 9/30=1/30
h. 5,68 - 1 3/14 + 2,12 - 5 9/14=7,8-6 12/14=7 8/10-6 12/14=7 56/70-6 60/70=6 126/70-6 60/70=66/70
i. 5,8 - 5 8/9 + 3,4 - 3 3/27=9,2 – (5 24/27 + 3 3/27) = 9,2 – 9 = 0,2