Topic 9 Review Test on Monday!!! FRACTIONS A fraction is one or more _ of a whole that is divided into __ parts. parts equal.

Topic 9 Review Test on Monday!!!

FRACTIONS A fraction is one or more _______ of a whole that is divided into ________ parts. parts equal.

Arranging on a number line Are the following closer to 0, ½, or 1? 1) 1 2) ½ 3) 0 4) 0 5) 1 6) 0 7) 1/2. 1) 8/9 2) 0.6 3) 3/18 4) 0.1 5) 13/16 6) 0.08 7) 8/17

Which of the following is out of place? 1/2 0 1 A 1/10 B 0.6 C 7/10 D 0.9 B Where should it be?

How do you find equivalent fractions?  Example: 3/7  Multiply the top and bottom by the same number.  2 is the easiest.  6/14

Equivalent fractions Name 2 equivalent fractions. 3/6 2/7 7/11 Possible answers ½ 6/12 Possible answers 4/14 6/21 Possible answers 14/22 21/33.

The MATH!  When you change a mixed number into an improper fraction, you have to be…

How to be b-B-add: 3 2 6 b…bottom times B…BIG, then Add…the numerator 6 x 3 = 18 + 2 = 20 Keep the original denominator 20 6

Converting Mixed Numbers 1 5 3 + = 16 3 1 5 333 Multiply the whole number by the denominator Add the numerator to the result Compute the final result Place over the initial denominator

You try a few  8 ½  3 1 3 2 x 8 + 1 = 17 2 10 3 x 3 + 1 = 3

Now go the other way Improper fraction to a mixed number  12  15 5 4 512 02 10 2 2 2 5 =

How do you find the simplest form?  What is the difference between a factor and a multiple of a number??? 8: 8, 16, 24, 32, 40, 48, 56..... 8: 1, 2, 4, 8 Which is which? Factors of 8 Multiples of 8

Example: 20 28 20 1 x 20 2 x 10 4 x 5 28 1 x 28 2 x 14 4 x 7 20: 1, 2, 4, 5, 10, 20 28: 1, 2, 4, 7, 14, 28 Common Factors: 1, 2, 4 GCF: 4 We will divide by 4. ÷ 4 = 5 7 Simplest Form

Simplest form Are these fractions equivalent? 2/5 and 6/15 Which is in simplest form? and How do you know?.

*Remember*  It is easy to compare fractions if they have the same denominator. All you have to do is to compare their numerators.denominatornumerators

When the denominators are the same, simply compare the numerator. 2/8 6/8 <

What do you do when the denominators are not the same? You must find a common denominator. Least Common Multiple (LCM) For example 6/8 and 4/5 5: 5, 10, 15, 20, 25, 30, 35, 40, 45..... 8: 8, 16, 24, 32, 40, 48, 56.....

For example 6/8 and 4/5 5: 5, 10,15, 20, 25, 30, 35, 40, 45..... 8: 8, 16, 24, 32, 40, 48, 56..... Do you see a common multiple??? 40 Use 40 as the common denominator. 6/8 x = 30/40 4/5 x = 32/40.

Another way is to multiply denominators 5 6 3 4 What are the two denominators? 4 x 6 = 24 4 and 6 The common denominator is 24.

OR  X out  Teacher demonstrated

REVIEW quiz!!!

1. Which fraction names the blue shaded part of the figure below? A.4/7 B.3/7 C.½ D.3/8

2. How can 52/86 be written in simplest form?  A. 52/86  B. 2/2  C. 17/28  D. 26/43

3. Which fraction represents 9 ÷ 1000?  A. 9/10  B. 9/1000  C. 9/100  D. 1/9

4. What is 6/100 expressed as a decimal? A. 6 B. 0.6 C. 0.06 D. 0.006

5. In order to go outside we must have 4/5 of the teachers in agreement. Is 9/11 of the teacher’s approval enough? A.Yes, Because 4/5 > 9/11 B.Yes, Because 4/5 < 9/11 C.No, Because 4/5 > 9/11 D.No, Because 4/5 < 9/11

6. Amy ran 1 ½ miles on Thursday, 2 2/5 miles on Saturday, and 1 1/10 miles on Monday. Which list has the miles Amy ran from greatest to least?  A. 2 2/5, 1 1/10, 1 ½  B. 1 1/10, 1 ½, 2 2/5  C. 2 2/5, 1 ½, 1 1/10  D. 1 1/10, 1 2/5, 1 ½

7. Which number represents S on the number line? 4 3 5 S A. 3/5 B. 4 ½ C. ½ D. 4 3/5

8. Which mixed number equals 16/3? A. 5 1/3 B. 15 1/3 C. 2 3/6 D. 6 0/3

9. What is the greatest common factor of 24 and 36?  A. 36  B. 12  C. 6  D. 72

10.Which fraction is equivalent to 1/3? A. 20/60 B. 60/100 C. 2/5 D. 9/16

11. Daniel has 66/100 of a dollar in his pocket. Which is equal to 66/100?  A. 66  B. 6.6  C. 0.60  D. 0.66

12. Which of the following equals 12/8?  A. 1  B. 2.3  C. 4.6  D. 1.5

13. There are 7 fluffy puppies, 6 soft puppies, and 5 slick puppies. What fraction of the puppies are soft?  A. 6/7  B. 1/3  C. 7/19  D. 6/19

Answers  1. B11. D  2. D12. D  3. B13. B  4. C  5. B  6. C  7. D  8. A  9. B  10. A