# User:Linterlo/My sandbox

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## Contents

# Are Fractions Commutative?

*Creating Fraction Strips*

- Use pre-cut pieces of paper
- On the first piece of paper write 1 and one whole.
- The second piece is folded in half, write 1/2 and one half
- Continue for quarters and eighths

*Using Fraction Strips for Multiplication*

- write the equation in symbols e.g. 1/3 x 3/8
- Then use the language e.g. 1/3 of 3/8
- Using the strip with eighths, cover all but three eighths.
- Visually it is easy to see that one third of three eighths is one eighth
- What other fractional multiplication problems can you solve with your fraction strips?

*Commutative Property of Mutiplication*

- 3 x 4 = 4 x 3 (even though they don't look the same)
- Does 1/3 x 3/8 yield the same answer as 3/8 x 1/3?
- What is the answer if we swap just the numerators? e.g. 3/3 x 1/8?

Fraction Strips http://www.nzmaths.co.nz/sites/default/files/Numeracy/2007matmas/Bk7/MM%207_7.pdf