G PRACTICAL MATH AND TABLES ( ^[18]) ( ^[24]) ( ^[37]) ( ^[38]) ( ^[54]) ( ^[60])

1. General: Architects seldom have to be involved in higher mathematics, but they need to continually do simple math well.

   1. For rough estimating (such as in this book) an accuracy of more than 90% to 95% is seldom required.

   2. Try to have a rough idea of what the answer should be, before the calculation (i.e., does the answer make sense?).

   3. Round numbers off and don't get bogged down in trivia.

   4. For final exact numbers that are important (such as final building areas), go slow, and recheck calculations at least once.

2. Decimals of a Foot	Decimals of an inch
   1 ? = .08 ? 2 ? = .17 ? 3 ? = .25 ? 4 ? = .33 ? 5 ? = .42 ? 6 ? = .50 ? 7 ? = .58 ? 8 ? = .67 ? 9 ? = .75 ? 10 ? = .83 ? 11 ? = .92 ? 12 ? = 1.0 ?	? ? = 0.125 ? ? = 0.250 ? ? ? = 0.375 ? ? = 0.50 ? ? ? = 0.625 ? ? = 0.750 ? ? ? = 0.875 ? 1 ? = 1.0 ?

3. Simple Algebra

   One unknown and two knowns