# The Thorndike Arithmetics: Book one-[three], Book 2 (Google eBook)

Rand McNally, 1917 - Arithmetic

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Page 27 - Similarly, if the sum of the digits of a number is divisible by 3, the number is divisible by 3.
Page 32 - V or 3," etc. 3. Count by fs to 84, saying, "2 X f = •¥• or 1f, 3 X f = ¥ or 24, 4 X t = V or 34," etc. 50. 1- Multiply f by 2. By 3. By 4. By 5. By 6. By 7. By 8. By 9. By 10.
Page 24 - To reduce a fraction to its lowest terms. A fraction is in its lowest terms, when the numerator and denominator are prime to each other.
Page 82 - Multiply as in the multiplication of integers, and point off" as many decimal places in the product as there are decimal places in both multiplicand and multiplier.
Page 99 - ... as many decimal places in the quotient as there are units in the remainder thus found.
Page 104 - Make a mark in the dividend as many places to the right of the decimal point as there are decimal places in the divisor. Place the decimal point in the quotient directly above this mark.
Page 113 - How many cu. in. does à 500-gallon tank contain? 8. One cubic foot of water weighs 62.5 Ib. What is the weight of the water in a tank containing 23.5 cu. ft., if the tank is full?
Page 20 - If the numerator and denominator of a fraction are multiplied by the same number, the amount or value of the fraction is the same as before.
Page 80 - How much coffee? 12- How much salt? 13. How much sugar? To multiply a decimal number by 10, move the decimal point one place to the right. Annex 0 if necessary. 14- How much flour would be needed for a 100-day trip?