INDEX

ARTICLE

Absolute value, 43

Addition tables, 117

Algorithm of Euclid, 226, 229

Alternating algebraic sum, 365

And, 1

Approximate division, 75

quotients, 75

Arabic notation, 108

Arithmetic progression, 15, 19
sequence, 412

Arithmetical value, 43

Base, 106, 425, 431, 433

Best radix, 137-141

Binary rule for multiplication, 470
Binary scale, 109

Calendar, 149

Casting out the elevens, 393
fifteens, 395
fives, 395
modulus, 225
nines, 393
sevens, 393
seventeens, 395
thirteens, 393
threes, 393, 395

Central term, 412

Change of scale, 123-131

Checking arithmetical work, 310

Chuquet-Baker egg problem, 487

Coconut problem, 488

Coefficient, 104

Common decrement, 20

difference, 15, 412

ARTICLE
divisor, 24
ratio, 21
Comparison of radices, 136
Complement, 420
Complete solution, 407
Composit, 155
Congruence, 176
Congruent to, 176
Curious properties of numbers, 477—
486
Cyeclical arrangement, 293

Decimal scale, 109

Denary scale, 109

Determinant, 242

Digits, 92, 223, 311

Dishonest men problem, 488

Dividend, 91

Divisible by, 54

Division, approximate, 75
exact, 56, 75
generalized, 91

Divisor, 91

Divisor of, 55

Duodecimal scale, 109

Duodenary scale, 109

Dyadic relation, 178

Equals, 1

Equivalent equations, 403
Euclid, algorithm of, 226, 229
Even multiple, 305

Exact quotient, 54, 75
Excess, 428

Excess rule for addition, 458

215