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Βιβλία Βιβλία 121 - 130 από 173 για The square of a number composed of tens and units is equal to the square of the tens,....
" The square of a number composed of tens and units is equal to the square of the tens, plus twice the product of the tens by the units, plus the square of the units. tens? "
A Complete Arithmetic: Uniting Mental and Written Exercises in a Natural ... - Σελίδα 253
των Emerson Elbridge White - 1870 - 340 σελίδες
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The Arithmetic Help for Pupils, Teachers, Business Men

Alvord D. Robinson - 1902 - 515 σελίδες
...2 s Then, 12 2 = 10 a + 2 (10 x 2) + 2» From this we learn that, The square of any number made up of tens and units is equal to the square of the tens,...the tens by the units, plus the square of the units. This can be shown by the following diagram: — (Product of tent by units.) (Square of units.) A (the...

Elementary School Mathematics by Grades: Arithmetic, geometry, and algebra ...

William Estabrook Chancellor - 1902 - 176 σελίδες
...25 2 = (20 + f>/ = 20 2 + 2 (20 x 5) +5 2 = 625 • The square of any number of two figures equals the square of the tens, plus twice the product of...the tens by the units, plus the square of the units. We may illustrate square root geometrically. The square root of 625 is 25. Show that this illustration...

Modern Commercial Arithmetic

Frank Joseph Schneck - 1902 - 299 σελίδες
...+ 3 10 + 3 (10 x 3) + 3s 102 + (10 x 3) 102 + 2 (10 x 3) + 32 = 169 = T" + 2TU + IP Principle. — The square of a number composed of tens and units is equal to the square of the tens + 2 x the tens x the units + the square of the units. PROBLEMS Write out the squares of the following:...

Modern Commercial Arithmetic

Frank Joseph Schneck - 1902 - 299 σελίδες
...10 + 3 10 + 3 (10 x 3) + 3' (10 x 3) 10" + 2 (10 x 3) + 3 2 = 169 = T ! + 2TU + TP Principle.—The square of a number composed of tens and units is equal to the square of the tens + 2 x the tens x the units + the square of the units. PROBLEMS Write out the squares of the following:...

The Model Practical Arithmetic

Edward Gideon - 1902 - 256 σελίδες
...25; or 400 + 200 + 25 = 625. 386. Principles. The square of any number composed of tens and ones is the square of the tens, plus twice the product of the tens by the ones, plus the square of the ones. Note 1. — Since every number can be regarded as being composed...

Ray's Modern Practical Arithmetic: A Revised Edition of Ray's Practical ...

Joseph Ray - 1903 - 320 σελίδες
...102 is the square of the tens; 2(10 x 6) Tlie square of a number consisting of tens and units equals the square of the tens plus twice the product of the tens by the units plus the square of the units. NOTES. — 1. 2(10 x 6) is the same as 2 x (10 x 6). See § 49. 2. When a number is separated into...

Arithmetic for Business with Short Methods and Rapid Calculations in All ...

Jacob Henry Minick, Clement Carrington Gaines - 1904 - 398 σελίδες
...4225 = 60" + 2 (60 X 5) + 5' 390. PRINCIPLE. — Tlie square of any number consisting of two figures is equal to the square of the tens, plus twice the product of the tens into the units, plus the square of the units. Thus, 23 = 20 + 3, and 23s = 20» + 2 (20 X 3) + 35....

Practical Business Arithmetic

John Henry Moore, George Washington Miner - 1906 - 449 σελίδες
...2 = 4 402+2(40x2) + 22= 1764 242. In the preceding process it is shown that the square of a number is equal to the square of the tens plus twice the...the tens by the units, plus the square of the units. 243. I2 = 1 , 102 = 100, 1002 = 10000, and so on ; 92 = 81, 992 = 9801, 9992 = 998001, and so on. It...

Progressive Arithmetic: First-[third] Book, Βιβλίο 3

William James Milne - 1906
...tens in the root, squaring, and subtracting from 3844, there is a remainder of 244. THIRD BOOK Since the square of a number composed of tens and units is equal to (the square of the tens) + (twice the product of the tens and the units) + (the square of the units), when the square of the...

Progressive Arithmetic: Third Book, Βιβλίο 3

William James Milne - 1906 - 366 σελίδες
...Writing 6 tens in the root, squaring, and subtracting from 3844, there is a remainder of 244. Since the square of a number composed of tens and units is equal to (the square of the tens) + (twice the product of the tens and the units) + (the square of the units), when the square of the...




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