Odpowiedź:
a)
[tex]840 \div 2 = 420 \\ 84 \div 2 = 42 \\ 8.4 \div 2 = 4.2 \\ 0.84 \div 2 = 0.42 \\ 0.084 \div 2 = 0.042[/tex]
b)
[tex]150 \div 3 = 50 \\ 15 \div 3 = 5 \\ 1.5 \div 3 = 0.5 \\ 0.15 \div 3 = 0.05 \\ 0.015 \div 3 = 0.005[/tex]