Elements of arithmetic

by Augustus De Morgan

What is the difference between	3708291640030174
and	30813649276188
Difference	3677477990753986

EXERCISES.

I. What is 18337 + 149263200 - 6472902?—Answer 142808635.

What is 1000 - 464 + 3279 - 646?—Ans. 3169.

II. Subtract

64 + 76 + 144 - 18 from 33 - 2 + 100037.—Ans. 99802.

III. What shorter rule might be made for subtraction when all the figures in the upper line are ciphers except the first? for example, in finding

10000000 - 2731634.

IV. Find 18362 + 2469 and 18362-2469, add the second result to the first, and then subtract 18362; subtract the second from the first, and then subtract 2469.—Answer 18362 and 2469.

V. There are four places on the same line in the order a, b, c, and d. From a to d it is 1463 miles; from a to c it is 728 miles; and from b to d it is 1317 miles. How far is it from a to b, from b to c, and from c to d?—Answer. From a to b 146, from b to c 582, and from c to d 735 miles.