By F. H. George

ISBN-10: 1483200280

ISBN-13: 9781483200286

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**Extra info for Arithmetic for the Mature Student**

**Example text**

570. 74 from 67 Your answer: Group 3 has a mistake. We can soon find out: 1 6 7 1 9 (6X6) 15 0 3 16 7 0 3 17 3 1 0 3 4 0 4 12 0- Here we are. Yes, you are right; this calculation was given the answer 4020. 13 3 3 9 7 1 13 3 3 (2)(2)(2) 9 3 3 10 (2)(2)(2) 119 9 7 0 0 12 9 4 3 4 3 What is 248x17? Turn to 64 75 from 85 Your answer: Group 1 contains a mistake. You are incorrect. us go through them: 41 7 1 20) 1 4 0 4)" 6 4 1 6 1 40 . 4 4 5) 3 79 18 9 5 1 5 3 9 3 5 4~5 4 5 ** 2 4 27 4 18)" 3 6 8 6 36 | | 76 72 | 48 36 | TT6 1 2 6 There is nothing wrong with these examples.

You have 2 bundles of 7. 7x2 = ? Let us explain it this way. Suppose you have 7 pencils and someone gives you another 7. How many have you got? Well, here are 7 pencils let us suppose: 1111111=1x7 2 times 7 is: 1 1 1 1 1 1 1 = 2 x 7 1 1 1 1 1 1 1 How many is that? Return to 56 and choose the right answer 70 from 82 Quite correct. This nearly brings us to the end of our first chapter. Turn to 83 to finish the chapter 71 from 65 Your answer: 371X12 = 383. No, you are wrong. You have added and not multiplied.

This is, in a sense, just the opposite of the rule you have just been looking at. The sign for subtraction is —; it is called "minus". It means "take away", and when put in between two numbers it means take the second away from the first. So: 17-7 means take seven away from seventeen. What is the result of subtracting 7 from 17? 58. I do not understand. 45. 10. 53. 24. 50 from 54 If you thought the answer was 4, you were wrong. You have added instead of subtracting. e. (1 + 1 ) - ( 1 +1) or 2 - 2 as we write it.

### Arithmetic for the Mature Student by F. H. George

by Edward

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