Подробное решение в прикрепленных.
1. 100111(2) = 39(10)
2. 513(10) = 1000000001(2)
7000(10) = 1101101011000(2)
3. 8700(10) = 20774(8)
9300(10) = 22124(8)
4. 287(10) = 11F(16)
1023(10) = 3FF(16)
5. 1010001001011(2) = 12113(8)
1010001001011(2) = 144B(16)
1011001101111(2) = 13157(8)
1011001101111(2) = 166F(16)
6. 266(8) = 10110110(2)
2A19(16) = 10101000011001(2)
7. 29(10) = 11101(2)
17(10) = 10001(2)
11101(2) + 10001(2) = 101110(2)
11101(2) - 10001(2) = 1100(2)
11101(2) * 10001(2) = 111101101(2)