1.Oblicz 2% z 2000mm2 ,13% z 26 m3 ,6,2% z 400, 12,5% z 240 ,13 1/3 z 600, 26 2/3 z 120 33,3 % z 196
2.Oblicz
50% z 50% liczby :140,2000 ,
33 1/3 % z 66 2/3 % liczby : 450, 7200,
5% z 40% liczby : 1000, 240,
46% ze 120% liczby : 30, 200.
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odpowiedź w załączniku
Zad1
2% z 2000mm^2 =0,02*2000=40 mm2
13% z 26m^3=0,13*26=3,38m3
62% z 400=0,62*400=248
12,5% z240=25/2%*240=25/200*240=30
13⅓ % liczby 600 = 40/3 % * 600 = 40/300 *600 = 80
26⅔ % liczby 120 = 80/3% * 120 = 80/300 *120 = 32
33,3% liczby 196= 0,333 *196=65,268
Zad2
a)50%z50% liczby:
50/100(50/100*140)=1/2*70=35
50/100(50/100*2000)=1/2*1000=500
b)33całe i 1/3%z66cał.i 2/3 liczby:
1/3(2/3*450)=1/3*300=100
1/3(2/3*7200)=1/3*4800=1600
c)5%z40%liczby:
5/100(40/100*1000)=1/20*400=20
5/100(40/100*240)=1/20*240=96
d)46%ze120%liczby:
46/100(120/100*30)=46/100*36=16 56/100=16,56
46/100(120/100*200)=46/100*240=110 4/10=110,4