а) 18/2=9(0); 9/2=4(1); 4/2=2(0); 2/2=1(0); 1/2=0(1); => 18₁₀ = 10010₂
б) 41/2=20(1); 20/2=10(0); 10/2=5(0); 5/2=2(1); 2/2=1(0); 1/2=0(1); => 41₁₀ = 101001₂
в) 74/2=37(0); 37/2=18(1); 18/2=9(0); 9/2=4(1); 4/2=2(0); 2/2=1(0); 1/2=0(1); => 74₁₀ = 1001010₂
г) 101/2=50(1); 50/2=25(0); 25/2=12(1); 12/2=6(0); 6/2=3(0); 3/2=1(1); 1/2=0(1); => 101₁₀ = 1100101₂
д) 297/2=148(1); 148/2=74(0); 74/2=37(0); 37/2=18(1); 18/2=9(0); 9/2=4(1); 4/2=2(0); 2/2=1(0); 1/2=0(1); => 297₁₀ = 100101001₂