Year 7 · Maths · Adding and subtracting fractions · Lesson 1
Adding and subtracting fractions: same denominator
Add and subtract fractions with the same denominator, simplify answers, convert to mixed numbers, and solve simple problems.
27-minute video lesson
Teaching, worked examples and 20 practice questions solved step by step.
Watch free for a monthWhat your child will learn
- Understand numerator and denominator
- Add fractions with the same denominator
- Subtract fractions with the same denominator
- Simplify answers
- Solve problems with fractions of a whole
The method
- Check the denominators are the same.
- Add or subtract the numerators.
- Keep the denominator.
- Simplify; change to a mixed number if needed.
Key words: fraction, numerator, denominator, simplify, mixed number.
Worked examples
The first three practice questions from the lesson, with every step.
Question 1
Work out 1/5 + 2/5.
- Step 1: 1/5 + 2/5 = 3/5
- Step 2: Can 3/5 simplify? No.
Answer: 3/5
Question 2
Work out 3/11 + 5/11.
- Step 1: 3/11 + 5/11 = 8/11
- Step 2: Can 8/11 simplify? No.
Answer: 8/11
Question 3
Work out 6/7 − 2/7.
- Step 1: 6/7 − 2/7 = 4/7
- Step 2: Can 4/7 simplify? No.
Answer: 4/7