- Maths Help
- AlgebraToggle Dropdown
- DecimalsToggle Dropdown
- Place value
- Comparing and ordering decimals
- Rounding to a place
- Significant figures
- Standard form and engineering notation
- Adding decimals
- Subtracting decimals
- Multiplying decimals
- Dividing decimals
- Converting decimals to fractions
- Converting decimals to percents
- Converting between decimals, fractions and percents
- Ordering decimals, fractions and percents

- Fractions
- Understanding fractions
- Simplifying (reducing) fractions
- Equivalent fractions
- Comparing fractions
- Ordering fractions
- Mixed numbers and improper fractions
- Adding fractions
- Subtracting fractions
- Adding and subtracting mixed numbers
- Multiplying fractions
- Dividing fractions
- Multiplying and dividing mixed numbers
- Converting fractions to decimals
- Converting fractions to percents
- Converting between fractions, decimals and percents
- Ordering fractions, decimals and percents

- IntegersToggle Dropdown
- MeasurementToggle Dropdown
- Metric units of measure
- Perimeter of squares, rectangles and triangles
- Circumference of circles
- Area of squares, rectangles and triangles
- Area of circles
- Surface area of cubes, cuboids and triangular prisms
- Surface area of cylinders
- Volume of cubes, cuboids and triangular prisms
- Volume of cylinders, cones, spheres and pyramids

- PercentsToggle Dropdown
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- TrigonometryToggle Dropdown

In this module, you can study how to add and subtract fractions with like denominators, such as 3/4 - 1/4, and also with unlike denominators, such as 1/2 - 1/3.

The six-minute video above reviews the meaning of fractions and then explains fraction addition. (If you want to skip to the review, start the video at 2:30.)

The video above explains how to subtract fractions.

When you change a denominator (the bottom part) of a fraction, you must also change the numerator (the top part) to keep the fraction worth the same amount.

- Study fraction subtractionRead about fraction subtraction at mathsisfun.com. This site also has a video demonstration of subtraction steps and a quiz at the end.
- Download a more complicated fraction subtraction worksheetCreate and download a set of subtraction problems using fractions with unlike denominators at math-aids.com.

Use these search terms to find your own resources:

*adding fractions unlike denominators*

subtracting fractions unlike denominators* *