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4 osoby na 1 km2
b
8 000 * 45 000 = 360 000 000
c
360 000 000 : 10 = 36 000 000
d
4 900 : 7 = 700 uczniów
e
1 000 420 = 420 000
420 000 * 12 = 5 040 000
b) 8 000 x 45 000 = 360 000 000
c) 360 000 000 : 10 = 36 000 000
d) 4900 : 7 =700
e) 420 x 1000 =420 000
420 000 x 12 = 5 040 000