Teaching Arithmetic in the Intermediate Grades

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Silver, Burdett, 1927 - Arithmetic - 354 pages
 

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Page 271 - I happened to think it would be a fine thing to make a timekeeper which would tell the day of the week and the day of the month, as well as strike like a common clock and point out the hours; also to have an attachment whereby it could be connected with a bedstead to set me on my feet at any hour in the morning; also to start fires, light lamps, etc.
Page 279 - ... a parallelogram is a quadrilateral whose opposite sides are equal and parallel...
Page 291 - The area of a parallelogram is equal to the product of its base and its height: A = bx h.
Page 220 - To multiply a decimal by 10, 100, 1000, &c., remove the decimal point as many places to the right as there are ciphers in the multiplier ; and if there be not places enough in the number, annex ciphers.
Page 130 - A number is divisible by 3 if the sum of its digits is divisible by 3• A number is divisible by 9 if the sum of its digits is divisible by 9.
Page 278 - State the number of quarts in a peck and the number of pecks in a busheL A peck is what part of a bushel ? 5. How many seconds in a minute? minutes in an hour? hours in a day ? days in a week ? days in a common year ? days in a leap year ? What months have 30 days ? Express the following as indicated: 6. 6 pt. as quarts. 10.
Page 184 - Rule. — Multiply the whole number by the denominator of the fraction, add the numerator to the product and place the denominator under the result.
Page 126 - We have seen in the preceding exercise that we may divide both the numerator and the denominator of a fraction by the same number without changing the value of the fraction.
Page 148 - Both terms of a fraction may be multiplied by the same number without changing the value of the fraction.
Page 107 - We have seen, on page 50, that we may divide both terms of a fraction by the same number without changing the value of the fraction ; that is, we may cancel any factor that is found in both terms.

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