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Next, the second zero is brought down, giving us 380. How many times does 43 go into 380? Eight times: 8 Ã 43 = 344. That's as far as we go. 5. Problem 1: Solution: Â < previous page page_23 next page > 31 32 < previous page page_24 next page > Page 24 How many times does 57 go into 207? It goes in three times, so we write 3 over the 7, multiply 3 Ã 57 and get 171. We subtract 171 from 207 and get 36. Then we bring down the next number, 5, which gives us 365. How many times does 57 go into 365?
86 d. 6 e. 102 2. Multiply each of these numbers by 100: a. 4 b. 02 c. 17 d. 13 e. 008 Answers 1. a. 9 b. 7 c. 860 37 38 d. 56 e. 1,020 2. a. 400 b. 2 c. 1,700 d. 13 e. 8 2 Fast Division Fast division is the exact reverse of fast multiplication. Instead of moving the decimal place to the right, we move it to the left. And in the case of whole numbers ending with zeros, we subtract zeros. Are you ready for some problems? Please work these out. Problems: Divide each of the following numbers by 10: a.
03 In each case what we did was move the decimal one place to the left. 03. Now we'll divide by 100. All you'll do here is move the decimal two places to the left. Problems: Please divide each of these numbers by 100: a. 6 b. 100 c. 9 Solutions: a. 006 b. 1 38 39 c. 09 Â < previous page < previous page page_30 page_31 next page > next page > Page 31 I'll bet you're finding these pretty easy. You'll probably be able to complete Self-Test 2 in less than five minutes. Self-Test 2 1. Divide each of these numbers by 10: a.