3 ms·Yes. 1.6 = (1 + 0.5 + 0.1). So just halve the number and add it to itself. Need more accuracy add 10%.by waynecochran 7y agoYes. 1.6 = (1 + 0.5 + 0.1). So just halve the number and add it to itself. Need more accuracy add 10%.