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COMPARING AND ORDERING RATIONAL/INTEGER RULES REVIEW.

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Presentation on theme: "COMPARING AND ORDERING RATIONAL/INTEGER RULES REVIEW."— Presentation transcript:

1 COMPARING AND ORDERING RATIONAL/INTEGER RULES REVIEW

2 Test Answers  1.D  2.A  3.C  4.B  5.3/10  6.30%  7.¾  8.0.75  9.0.125  10.12.5%  11.C  12.B  13.D  14.B  15.B  16.0.75  17.B  18.B  19.D  20.C  21.16  22.10  23.C  24.G  25.C  Bonus: ¼

3 Comparing Numbers on a Number Line  Numbers get larger as you move to the right on the number line.  Numbers get smaller as you move to the left on the number line.

4 Order the following from least to greatest.  ½  -3/8  -0.625  7/8  1.25  -1 1/8

5 Place the following on the number line below:  ½  -3/8  -0.625  7/8  1.25  -1 1/8

6 Adding Integers Same signs … _____ Different signs… _____ Bigger team ….______ + + RULES

7 Review: Adding Integers  6 + -9  -3 + - 4  -10 + 15 -3 -7 5

8 Two Pencil Marks -8 – 10 - 2 - - 6 Dry erase boards -8 + -10 -18 -2 + + 6 4

9 Gretchen bought a sweater for $23.89. In addition, she had to pay $1.43 in sales tax. She gave the sales clerk $30. EXPLAIN how to find the change Gretchen received from her total purchase. Do not solve. Add the cost and the tax. Subtract the answer from 30.

10 38.1 + x for x= - 6.12 So what is the rule for adding and subtracting decimals? 38.1 + -6.12 Different signs subtract 38.10 +-6.12 31.98 Bigger team wins--positive

11 _ 3 + _ 1 8 8 Same signs add and keep -4 = -1 8 2

12 _ 8 _ 2 17 17 Two pencil marks Same signs add and keep -8 + -2 = -10 17 17 17

13 -7.5 – (-3.01) = Y -7.5 – (-3.01) = Y Two pencil mark -7.5 + 3.01 Different signs subtract Bigger team wins -7.50 +3.01 -4.49

14 Ana worked 6 ½ hr on Monday, 5 ¾ hr on Tuesday and 7 1 / 6 hr on Friday. How many total hours did she work these three days? 6565 1= 6 2 12 3 = 9 4 12 1 = 2 6 12 7 18 17 = 19 5 12 12

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