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An ancient method of converting decimal numbers to binary form is to halve the number until 1 is reached. When halving an odd number round down to the number below (13 halved = 61/2 round down to 6). If the number is even then record a 0, if the number is odd then record a 1.

22 ................is even .......0

22 ÷ 2 = 11..is odd..........1

11 ÷ 2 = 5....is odd..........1

5 ÷ 2 = 2......is even........0

2 ÷ 2 = 1......is odd..........1

The binary equivalent of 22 is therefore 10110

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15y ago

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