Step-by-step Maths Level 5 · Adding and subtracting fractions with the same denominator · Summary
Step-by-step Maths Level 5 Adding and subtracting fractions with the same denominator: summary and key words
Part of the Step-by-step Maths Level 5 adding and subtracting fractions with the same denominator chapter. Chapter overview · whole chapter on one page
Chapter summary
| Skill | Method |
|---|---|
| Same denominator | Compare and order by the top numbers; the parts are the same size |
| Equal fractions | Multiply the top and bottom by the same number |
| Adding and subtracting | Add or subtract the top numbers; keep the bottom number; simplify |
| Totals over one | Write the whole ones, then the fraction left: 5/4 = 1 1/4 |
| Fractions of amounts | Divide by the bottom number, then multiply by the top number |
Can you…?
- I can compare and order fractions with the same denominator
- I can write an equal fraction with a small denominator, using a diagram
- I can add and subtract fractions with the same denominator, and simplify
- I can write a total greater than one as a mixed number
- I can find a fraction of a length or an amount
Key terms
- numerator
- the top number of a fraction
- denominator
- the bottom number of a fraction
- simplify
- divide the top and bottom by the same number to make a fraction smaller
- mixed number
- a whole number and a fraction, such as 1 1/4