Answers to Book 1 Problems

Answers

1.     1/63/6  =   4/6 ,          6/6 –   4/6  =   2/6

2.     4/81/8 =   5/8,          8/8 –  5/83/8

3.    3/84/87/8 ,        8/8 –  7/81/8

4.    2/124/125/1211/12 ,         12/12 –  11/121/12

5a.   5/8     5b.   2/8     5c.   3/8     5d.   4/12

5e.   14/14 = 1     5f.   6/7    5g.   3/5     5h.   5/12

5i.   9/10     5j.   3/12     5k.   3/10     5l.   4/12

Did you notice that 5b is the inverse of 5a? Inverses “undo” each other. That sounds funny, so let me explain: In 5a, you added two-eighths to three-eighths to get five-eighths. In 5b, you took the answer to 5a (five-eighths) and subtracted one of the things you added (three-eighths) to get the other thing you added (two-eighths). So we can say that 5b “undid” 5a. That’s pretty cool, isn’t it? I’ve got a lot more cool stuff in my other books. Oh, in my next book, you’ll meet my friend, Cleveland. He’s cool, too!

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