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" Square Measure 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet = 1 square yard (sq. yd.) 30| square yards — 1 square rod (sq. rd.) 160 square rods = 1 acre (A.) 640 acres = 1 square mile (sq. "
Walton and Holmes's Arithmetics: 1st Book- - Page 145
by George Augustus Walton, Stanley Harry Holmes - 1909
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The Model Mental Arithmetic: Containing Oral Exercises for Graded and ...

Edgar Arthur Singer - Mental arithmetic - 1876 - 198 pages
...in.) are 1 square foot, sq.ft. 9 square feet " 1 square yard, sq. yd. 30 £ square yards " 1 square rod, sq. rd. 160 square rods " 1 acre, A. 640 acres " 1 square mile, sq. mi. In measuring land, IS square rods are 1 Bquare chain (sq. ch.), and 10 square chains are 1...
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The Practical Arithmetic on the Inductive Plan: Including Oral and Written ...

William James Milne - Arithmetic - 1877 - 402 pages
...1 Square Foot . . . sq. ft. 9 Square Feet = 1 Square Yard . . . sq. yd. 30J Square Yards = 1 Square Rod . . . sq. rd. 160 Square Rods = 1 Acre A. 640 Acres = 1 Square Mile . . . sq. mi. sq. mi. A. sq.rd. sq. yd. sq.ft. sq.in. 1 = 640 = 102400 = 3097600 = 27878400 = 4014489600...
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Robinson's Progressive Practical Arithmetic: Containing the Theory of ...

Horatio Nelson Robinson, Daniel W. Fish - Arithmetic - 1877 - 372 pages
...(sq. in.) make 1 Square Foot sq. ft. 9 Square Feet " 1 Square Yard sq. yd. 30J Square Yards " 1 Square Rod sq. rd. 160 Square Rods " 1 Acre A. 640 Acres " 1 Square Mile sq. mi. UNIT EQUIVALENTS. sq. ft. sq. in. sq. yd. 1 = 144 sq. rd. 1 = 9 = 1296 A. 1 = 30J = 272J =...
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The Rudiments of Written Arithmetic: Containing Slate and Black-board ...

Horatio Nelson Robinson - Arithmetic - 1877 - 212 pages
...(sq. in.) make 1 Square Foot sq. ft. 9 Square Feet " 1 Square Yard sq. yd. 30} Square Yards " 1 Square Rod sq. rd. 160 Square Rods " 1 Acre A. 640 Acres " 1 Square Mile sq. mi. UNIT EQUIVALENTS. sq. ft. sq. in. sq. yd. 1 = 144 sq. rd. 1 = 9 = 1276 A. 1 = 30} = 272i =...
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Ray's New Practical Arithmetic: A Rev. Ed. of the Practical Arithmetic

Joseph Ray - Arithmetic - 1877 - 402 pages
...square foot, marked sq. ft. 9 square feet " 1 square yard, " sq. j'd. 30J- square yards " 1 square rod, " sq. rd. 160 square rods " 1 acre, A. 640 acres " 1 square mile, " sq. mi. 1. Reduce 8 sq. yd. to square inches. 10368 sq. in. 2. .Reduce 4 A. to square rods. 640 sq....
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Ray's Elementary Arithmetic: Embracing Mental and Written Exercises, for ...

Joseph Ray - Arithmetic - 1879 - 200 pages
...marked sq. ft. 9 square feet " 1 square yard, " sq. yd. 30J square yards " 1 square rd. or perch, " sq. rd. 160 square rods " 1 acre, " A. 640 acres " 1 square mile, " sq. mi. MENTAL EXERCISES. 1. How many square feet in 3 square yards? In 2 sq. yd.? In 5 sq. yd.?...
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Methods of Teaching: A Handbook of Principles, Directions, and Working ...

John Swett - Teaching - 1880 - 366 pages
...(sq. ft.). 9 square feet (3x3) =1 square yard (sq. yd.). 272J square feet (16£ X 16£) = 1 square rod (sq. rd.). 160 square rods = 1 acre (a.). 640 acres = 1 square mile. 2. Practical Application. Teachers will require pupils to measure, and then find the square contents...
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The Complete Arithmetic, Oral and Written, on the Basis of Works

Henry Bartlett Maglathlin - Arithmetic - 1882 - 398 pages
...foot, sq. ft. 9 square feet " 1 square yard, sq. yd. 30£ square yards, or 272 \ sq. ft. " 1 square rod, sq. rd. 160 square rods " 1 acre, A. 640 acres " 1 square mile, or section, sq. mi. An acre contains 43,560 square feet. A rood (K.) is 40 square rods. ORAL EXERCISES....
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Fish's Arithmetic Number Two: Oral and Written, Upon the Inductive ..., Book 2

Daniel W. Fish - Arithmetic - 1883 - 364 pages
...144 Sq. In. (sq. in.) = 1 Sq. Foot, fq. ft. 9 Square Feet = 1 Sq. Yard, sq. yd. 30J Square Yards = 1 Sq. Rod, sq. rd 160 Square Rods = 1 Acre, . . A. 640 Acres = 1 Sq. Mile, sq. mi. EQUIVALENTS. f 4014489600 sq. in. 278T8400 sg.fi. 1 tq. mi.— -I 8097600 sq. yd....
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Fish's Arithmetic Number One[-two]: Oral and Written ..., Volume 2

Daniel W. Fish - Arithmetic - 1883 - 348 pages
...144 Sq. In. (sq. in.) = 1 Sq. Foot, sq. fl. 9 Square Feet - 1 Sq. Yard, sg. yd. 30J Square Yards = 1 Sq. Rod, sq. rd. 160 Square Rods = 1 Acre, . . A. 640 Acres = 1 Sq. Mile, sq. mi. EQUIVALENTS. Г 4014489600 sq. in. 27878400*?. ft. l sq. mí,— -j 3097600 sq. yd....
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