Example 1
A pizza is cut into 8 equal slices and you eat 3. What fraction did you eat?
- The whole is cut into 8 equal parts: the denominator is 8.
- You have 3 of them: the numerator is 3.
Answer: 3/8
📘 Class 6 maths · session 1 of 13 · 60 minutes
Fractions one idea at a time: what a fraction means, equivalent fractions with fraction bars, comparing, then adding, subtracting and multiplying. Each idea is practised at three levels before the next.
A complete lesson · 60 minutes
Open this page with your learner and work down it, or press Teach this lesson to go through it one step at a time on a big screen. Every section has something to do.
Class 6 · CBSE, ICSE and state boards
Warm-up · think first
They ate the same amount. Two pieces out of six is 2/6, and one third of six pieces is also two pieces, so 2/6 = 1/3.
Teacher tip: Before you show the answer, ask everyone to vote: Asha, Ben or the same? Then ask one person from each side to explain.
Part 1 of 4 · learn, see, practise
A fraction names equal parts of a whole. In 3/4 the denominator 4 says the whole is cut into 4 equal parts, and the numerator 3 says how many parts we have.
A proper fraction like 3/5 is less than 1. An improper fraction like 7/4 is 1 or more, and can be written as a mixed number: 7 ÷ 4 = 1 remainder 3, so 7/4 = 1 3/4.
A pizza is cut into 8 equal slices and you eat 3. What fraction did you eat?
Answer: 3/8
Write 7/4 as a mixed number, and 2 3/5 as an improper fraction.
Answer: 1 3/4 and 13/5
Start with the warm-up and go as far as you can. The stretch questions are meant to be hard.
Part 2 of 4 · learn, see, practise
Multiply or divide the numerator and denominator by the same number and the value does not change: 2/3 = 4/6 = 8/12.
To write a fraction in its simplest form, divide both by their highest common factor (HCF).
Simplify 18/24.
Answer: 3/4
Find the missing number: 2/3 = ?/12.
Answer: 8
Change the top and bottom numbers of each fraction. The bars redraw so you can see the size, and the panel below compares, adds and simplifies for you.
Start with the warm-up and go as far as you can. The stretch questions are meant to be hard.
Part 3 of 4 · learn, see, practise
Same denominator: the bigger numerator is bigger. Same numerator: the smaller denominator is bigger (bigger pieces).
Otherwise make the denominators the same, or cross-multiply: a/b is bigger than c/d when a × d is bigger than b × c.
Which is greater, 3/4 or 5/7?
Answer: 3/4
Put 1/2, 2/5 and 3/4 in order from smallest.
Answer: 2/5, 1/2, 3/4
Start with the warm-up and go as far as you can. The stretch questions are meant to be hard.
Part 4 of 4 · learn, see, practise
To add or subtract, make the denominators the same, then add or subtract only the numerators. Simplify at the end.
To multiply, multiply the numerators and multiply the denominators. "Of" means multiply: 3/4 of 20 = 3/4 × 20 = 15.
2/3 + 1/6 = ?
Answer: 5/6
3/4 × 2/5 = ?
Answer: 3/10
Start with the warm-up and go as far as you can. The stretch questions are meant to be hard.
Watch out
1/2 + 1/3 is not 2/5. Make the parts the same size first: 3/6 + 2/6 = 5/6.
6/12 is not finished: divide by the HCF to get 1/2.
1/8 is smaller than 1/4: more parts means smaller parts.
Class activity 1 of 3
A recipe for 4 people uses 3/4 cup of sugar, 1/2 cup of butter, 2 1/4 cups of flour and 2/3 cup of milk. Rewrite it for 6 people.
Class activity 2 of 3
3 pizzas are each cut into 8 equal slices. Riya eats 3/8 of a pizza, Kabir eats 5/8 of a pizza and Asha eats 1 1/4 pizzas.
Class activity 3 of 3
Each clue describes exactly one fraction. Find it.
Quiz · 10 questions
Pick an answer to see if it is right and why. Your best score is saved on this device.
After class · project
Pick a simple recipe your family makes for 4 people (lemonade, a sandwich, a salad, a smoothie). Rewrite it so it serves 2 people and 6 people.
What to make: One recipe card (paper or a photo of it) with three columns: 4 people, 2 people, 6 people.
Stretch: Find the price of each ingredient and work out the cost of one serving.
| Look for | Done well when |
|---|---|
| Correct amounts | Every amount for 2 and 6 people is right |
| Simplest form | Fractions are simplified and improper fractions are mixed numbers |
| Pictures | Two fraction-bar drawings match the amounts |
| Explaining | The sentence about 3/2 makes sense to someone else |
Copy it onto paper or print the practice sheet.
Recipe: ______________________ Ingredient | 4 people | 2 people (× 1/2) | 6 people (× 3/2) __________ | ________ | ________ | ________ __________ | ________ | ________ | ________ __________ | ________ | ________ | ________ Fraction-bar drawings for two amounts: Why multiplying by 3/2 gives the amounts for 6 people: ____________________
Homework
Try each on paper, then tap to see the answer and working. Or print the practice sheet.
3/4 (divide by 15)
5/8 (14/24 against 15/24)
19/24 (9/24 + 10/24)
40 litres
30/7
For parents and teachers
Use it as it is, or stretch any part over two sessions. Each row links to the part of the page you need.
| Time | Part | The teacher | The learner |
|---|---|---|---|
| 0–4 min | Warm-up | Ask the chocolate question and take a vote. | Vote and explain. |
| 4–12 min | Meaning | Fold a paper strip; show the examples step by step. | Practise to the stretch. |
| 12–22 min | Equivalent fractions | Use the fraction bars for the tasks. | Practise; simplify 84/126. |
| 22–30 min | Comparing | Cross-multiply on the board. | Practise; halfway stretch. |
| 30–38 min | Operations | Show one example per operation. | Practise to 3/4 of 3/5 of 40. |
| 38–45 min | Party recipe | Remind them: multiply by 3/2. | Scale the recipe. |
| 45–51 min | Pizza party | Draw the 3 pizzas in eighths. | Solve all four. |
| 51–56 min | Fraction detective | Set as homework if short. | Solve the clues. |
| 56–59 min | Quiz | Run part of the quiz as an exit ticket. | Answer. |
| 59–60 min | Set the project | Show the recipe template. | Pick a recipe. |
Stay with halves, quarters and eighths, and use the bars for every question before writing anything.
Ask for three different fractions between 1/3 and 1/2, and a reason why there is always another one in between.
FAQ
One idea at a time: meaning, equivalent fractions, comparing, then operations, with fraction bars to see each idea and practice after every step.
Make the denominators equal using the LCM, then add the numerators and keep the denominator, and simplify at the end.
Yes. The practice sheet for this lesson has every question with space to work and an answer key on its own page.
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