SUBTRACTION.
33. The national independence of the United States was declared in 1776; how many years from that period to the close of the last war with Great Britain, in 1815?
Ans. 39 years.
34. The last transit of Venus was in 1769, and the next will be in 1874; how many years will intervene.
Ans. 105 years.
35. The State of New Jersey contains 6851 square miles, and Delaware 2120 square miles. How many more square miles has the former State than the latter?
Ans. 4731.
36. In 1840 the number of inhabitants in the United States was 17,069,453, and in 1850 it was 23,191,876; what was the increase?
Ans. 6,122,423.
37. In 1850 there were raised in the State of Ohio 86,619,608 bushels of corn, and in 1853, 73,436,690 bushels; what was the increase ?
Ans. 16,817,082 bushels.
38. By the census of 1850, 13,121,498 bushels of wheat were raised in New York, and 15,367,691 bushels in Pennsylvania; how many bushels in the latter State more than in the former? Ans. 2,246,193 bushels.
39. The city of New York owes 13,960,856 dollars, and Boston owes 7,779,855 dollars; how much more does New York owe than Boston ?
Ans: 6,181,001 dollars.
40. From five hundred eighty-one thousand take three thousand and ninety-six.
Ans. 577,904.
41. It was ascertained by a transit of Venus, June 3, 1769, that the mean distance of the earth from the sun is ninety-five millions one hundred seventy-three thousand one hundred twenty-seven miles, and that the mean distance of Mars from the sun is one hundred forty-five millions fourteen thousand one hundred forty-eight miles. Required the difference of the distances.
Ans. 49,841,021 miles.
