Presentation is loading. Please wait.

Presentation is loading. Please wait.

Keith Burnett, Sutton Coldfield College, Adding and Subtracting Quick and Dirty Fractions Method! Adult Numeracy N2/L2.4: Use.

Published byRalf Freeman Modified over 8 years ago

Similar presentations

Presentation on theme: "Keith Burnett, Sutton Coldfield College, Adding and Subtracting Quick and Dirty Fractions Method! Adult Numeracy N2/L2.4: Use."— Presentation transcript:

1 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com Adding and Subtracting Quick and Dirty Fractions Method! Adult Numeracy N2/L2.4: Use fractions to add, subtract, multiply and divide amounts or quantities Functional Mathematics Level 2: Add and subtract fractions - add and subtract using halves, thirds, quarters, fifths and tenths Kindly contributed to www.skillsworkshop.org by Keith Burnett, Sutton Coldfield College. ping.keith@googlemail.comwww.skillsworkshop.org ping.keith@googlemail.com To see more of Keith’s resources, including a traditional approach to adding and subtracting fractions visit http://www.slideshare.net/keithpeter

2 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com You can add two fractions by doing three multiplications and an addition!

3 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

4

5

6

7

8 3  3

9 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com 9

10 9

11 9 5  2

12 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com 910

13 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com 910

14 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com 910 5  3

15 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com 910 15

16 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com 910 15 +

17 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com 910 15 +

18 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

19 An example that has denominators with a common factor…

20 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

21

22 5  9

23 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com 45

24 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com 45

25 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com 4524

26 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com 4524

27 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com 4524 54

28 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com 4524 54 +

29 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com 4524 54 +

30 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

31

32 5

33 5 18

34 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

35 You had to cancel down at the end because of the common factor…

36 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com Mixed numbers?

37 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com Mixed numbers? Just convert to improper fractions and carry on…

38 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com Subtraction?

39 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com Subtraction? Just subtract the top totals instead of adding…

40 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com Your turn…

41 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com Answer on next slide…

42 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

43 Make up some more questions and check them with your calculator

Download ppt "Keith Burnett, Sutton Coldfield College, Adding and Subtracting Quick and Dirty Fractions Method! Adult Numeracy N2/L2.4: Use."

Similar presentations

ADDING AND SUBTRACTING FRACTIONS

ADDING AND SUBTRACTING FRACTIONS
Fractions During this topic you will learn to:

Fractions During this topic you will learn to:
Fractions – Adding Fractions

Fractions – Adding Fractions
Keith Burnett, Sutton Coldfield College, Ratios and Proportion Adult Numeracy N1/L2.3: Understand ratio written in the form 3:2.

Keith Burnett, Sutton Coldfield College, Ratios and Proportion Adult Numeracy N1/L2.3: Understand ratio written in the form 3:2.
Converting Mixed and Improper Fractions

Converting Mixed and Improper Fractions
2.7 Adding and Subtracting Mixed Numbers 1 Adding Mixed Numbers Procedure: Adding Mixed Numbers 1. Rewrite the problem vertically aligning the whole numbers.

2.7 Adding and Subtracting Mixed Numbers 1 Adding Mixed Numbers Procedure: Adding Mixed Numbers 1. Rewrite the problem vertically aligning the whole numbers.
MATHEMATICS Dividing with Fractions. Lesson Objectives The aim of this powerpoint is to help you… to divide fractions by whole numbers to divide whole.

MATHEMATICS Dividing with Fractions. Lesson Objectives The aim of this powerpoint is to help you… to divide fractions by whole numbers to divide whole.
Adding Fractions 1.Add numerators — 8 Adding Fractions with Like Denominators = 1 12 ++ 2 12 5 12 8 12.

Adding Fractions 1.Add numerators — 8 Adding Fractions with Like Denominators =
Chapter 7 Fractions.

Chapter 7 Fractions.
Adding, Subtracting, Multiplying and Dividing Fractions

Adding, Subtracting, Multiplying and Dividing Fractions
MFM 2P Review – Core Skills Learning Goals: I can round whole numbers and integers I can convert from a percent to a decimal I can convert a number into.

MFM 2P Review – Core Skills Learning Goals: I can round whole numbers and integers I can convert from a percent to a decimal I can convert a number into.
Change between Mixed #’s & Improper Fractions. Write each fraction in simplest form. 1. 2. 3. 4.

Change between Mixed #’s & Improper Fractions. Write each fraction in simplest form
4-5 Add or Subtract Mixed Numbers. Add Mixed Numbers To add mixed numbers: o First add the fractions o You may need to rename the fractions so that they.

4-5 Add or Subtract Mixed Numbers. Add Mixed Numbers To add mixed numbers: o First add the fractions o You may need to rename the fractions so that they.
Fractions Revision Lesson EQUIVALENT FRACTIONS Fraction that is worth the same as another fraction but looks different. Eg. 1 = 2 2 4 Useful for canceling.

Fractions Revision Lesson EQUIVALENT FRACTIONS Fraction that is worth the same as another fraction but looks different. Eg. 1 = Useful for canceling.
Mathematics Fractions Re-cap1.

Mathematics Fractions Re-cap1.
Mixed Numbers & Improper Fractions

Mixed Numbers & Improper Fractions
Fraction Operations Review Kerbacher. Simplifying Fractions To simplify a fraction: Find the largest number divides evenly into the numerator and denominator.

Fraction Operations Review Kerbacher. Simplifying Fractions To simplify a fraction: Find the largest number divides evenly into the numerator and denominator.
Fractions http://www.mathsisfun.com/fractions.html.

Fractions
Mixed Numbers to Improper Fractions. Lets say you have a mixed number of 1 and 5/8 You can change this into the number 13/8. For converting mixed numbers.

Mixed Numbers to Improper Fractions. Lets say you have a mixed number of 1 and 5/8 You can change this into the number 13/8. For converting mixed numbers.
Mixed Numbers & Improper Fractions

Mixed Numbers & Improper Fractions

Similar presentations

Ads by Google