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" Rule. — Annex as many ciphers to the right of the multiplicand as there are nines in the multiplier, and from this number subtract the multiplicand,; the remainder will be the product required. "
The science and art of arithmetic, by A. Sonnenschein and H.A. Nesbitt.d Pt.1 - Page 54
by Adolf Sonnenschein - 1870
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Pike's System of Arithmetic Abridged: To which are Added Appropriate ...

Nicolas Pike, Dudley Leavitt - Arithmetic - 1826 - 214 pages
...multiplier is a composite number, what is your rule 1 CASE V. To multiply by 9, 99, 999, #e. RULE. — Annex as many ciphers to the right of the multiplicand as there are figures in your multiplier, and from the number thus produced, subtract the given multiplicand, and...
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Pike's System of Arithmetic Abridged: To which are Added Appropriate ...

Nicolas Pike, Dudley Leavitt - Arithmetic - 1826 - 222 pages
...613975 1000 8473965 10000 26 SIMPLE MULTIPLICATION. CASE V. To multiply by 9, 99, 999. RULE. — Annex as many ciphers to the right of the multiplicand as there are figures in your multiplier, and from the number thus produced, subtract the given multiplicand, and...
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Rudimentary arithmetic

James Haddon - Arithmetic - 1849 - 144 pages
...ciphers in any other part of the multiplier, neglect them. To multiply by 10, 100, 1000, &c., attach as many ciphers to the right of the multiplicand as there are in the' multiplier; thus 257 x 100 = 25700. Method of Proof. Make the multiplicand the multiplier,...
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The Speedy Calculator: Being a System of Arithmetic

Benjamin Naylor - 1850 - 334 pages
...9999=99980001 (_ 99999=9999800001 CONTRACTIONS IN MULTIPLICATION. To multiply by any number of nines. — Annex as many ciphers to the right of the multiplicand as there are nines in the multiplier, and from this number subtract the multiplicand, the remainder will be the...
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Rudimentary Arithmetic for the Use of Schools and Self-instruction

James Haddon - Arithmetic - 1862 - 358 pages
...ciphers in any other part of the multiplier neglect them. To multiply by 10, 100, 1000, &c., attach as many ciphers to the right of the multiplicand, as there are in the multiplier, thus, 36.5 x 10 = 3650 ; 365 x 100 = 36,500 ; 365 x 1000 = 365000. Proof. — Make...
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The Practical Arithmetic on the Inductive Plan: Including Oral and Written ...

William James Milne - Arithmetic - 1877 - 418 pages
...ciphers affixed ? 80. PRINCIPLE.—In multiplying by 10, 100, 1000, etc., as many ciphers must be annexed to the right of the multiplicand as there are ciphers in the multiplier. 1. Multiply 36 by 1000. PROCESS. ANALYSIS.—Since in multiplying by 1 with any 3 6 number of ciphers...
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The science and art of arithmetic, by A. Sonnenschein and H.A. Nesbitt ...

Adolf Sonnenschein - 1880 - 496 pages
...so on. The numbers 10, 100, 1000, &c., which are 10, 10 x 10, 10 x 10 x 10, &c., are called Powers of 10, Learn by heart : To multiply a number by any...ciphers to the right of the multiplicand as there are cipher» in the multiplier. This rule is of course inapplicable to multiplication of money. (Ch. V....
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How to Become Quick at Figures: Comprising the Shortest, Quickest, and Best ...

D. M. Garret - Arithmetic - 1886 - 202 pages
...998001 square J 9999 99980001 of ( 99999 9999800001 TO MULTIPLY BY ANY NUMBER OF NINES. Rule. — Annex as many ciphers to the right of the multiplicand as there are nines in the multiplier, and from this number subtract the multiplicand,; the remainder will be the...
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How to Become Quick at Figures: Comprising the Shortest, Quickest and Best ...

D. M. Garrett - Arithmetic - 1886 - 210 pages
...998001 square -j 9999 99980001 of ( 9U999 9999800001 TO MULTIPLY BY ANY NUMBER OF NINES. Rule. — Annex as many ciphers to the right of the multiplicand as there are nines in the multiplier, and from this number subtract the multiplicand .; the remainder will be the...
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Hamilton's Standard Arithmetic: Book One-three, Book 3

Samuel Hamilton - Arithmetic - 1917 - 410 pages
...To multiply by 21, multiply by 20 and add the multiplicand. To multiply by 10, 100, 1000, etc., add as many ciphers to the right of the multiplicand as there are ciphers in the multiplier. Thus, 28 x 1000 = 28,000. To multiply by 40, 400, 4000, etc., multiply by 4, and add as many ciphers...
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