MATH SITES

BBC Fraction Activity

- Click on "Play the Game" (yellow circle).
- Choose a picture on the bottom to represent the two fractions.
- Drag the numbers over to the numerator and denominator.
- The picture will show and allow you to compare the two fractions
- Which is bigger, smaller, or are they equal?

http://www.math-play.com/adding-and-subtracting-fractions-game.html

- Choose a game piece and have fun!!!
- Use a scratch paper to determine the common denominators and add or subtract the fractions.
- How to calculate: to find a common denominator, list out the multiples of each denominator. For example, for the equation 2/3 + 1/6, the multiples of 3 are 3,6,9,12,15,18, etc. The multiples of 6 are 6, 12, 18,etc. The least common multiple is 6. For the fraction 1/6, the denominator is already 6, so leave it. For the fraction 2/3, multiply the denominator by 2 to make it 6, and multiply the numerator by 2 also. This simply is multiplying by 1 or 2/2. Therefore, the equation changes to 4/6 + 1/6. Now, add theĀ numerators, but keep the denominators the same. The answer would then be 5/6.

http://illuminations.nctm.org/ActivityDetail.aspx?ID=11

- Change the numerator and/or denominators in bottom left of screen and click anywhere on the screen for the fraction to change.
- Write down the fraction, decimal, and percentage for each fraction.
- How is the fraction changed to a decimal (numerator divided by denominator)?
- How can you change the decimal to a percentage (move the decimal over two place values to the right, or multiply by 100)?