Year 1: One quarter of a shape
Part of the Year 1 halves and quarters chapter. Chapter overview · whole chapter on one page · Download worksheet (PDF) · Answers (PDF)
One quarter of a shape
A quarter is one of four equal parts. If you share a shape into four equal parts, each part is one quarter.
Four quarters make one whole. Two quarters make one half.
Key ideas
- A quarter is one of four equal parts.
- Four quarters make one whole.
- Two quarters make one half.
Method. One quarter is one of 4 equal parts. Check the parts and the shading.
- Count the parts. One quarter needs 4 equal parts.4 parts
- Check the parts are the same size. Equal parts are the same size.The parts are the same size.
- Count the shaded parts. We need exactly one shaded part for one quarter.1 shaded
- Decide. Yes. The shaded part is one quarter.
Check. Say it in words: the shaded part is one quarter. ✓
Watch out. Parts must be the same size before you can call them halves or quarters.
Method. One quarter is one of 4 equal parts. Check the parts and the shading.
- Count the parts. One quarter needs 4 equal parts.4 parts
- Check the parts are the same size. Equal parts are the same size.The parts are the same size.
- Count the shaded parts. We need exactly one shaded part for one quarter.2 shaded
- Decide. No. 2 parts are shaded, not one, so it is not one quarter.
Check. Say it in words: the shaded part is not one quarter. ✓
Watch out. Parts must be the same size before you can call them halves or quarters.
Method. Look at each picture and find the one with 4 equal parts.
- Look at A. Count the equal parts and the shaded parts.A: 4 parts, equal, 0 shaded
- Look at B. Count the equal parts and the shaded parts.B: 3 parts, equal, 0 shaded
- Look at C. Count the equal parts and the shaded parts.C: 3 parts, not equal, 0 shaded
- Find the picture that matches. We want the picture with 4 equal parts.Matches: A
- Write the answer. A
Check. B and C do not match. ✓
Watch out. Count the equal parts first, then the shaded parts.
Watch out
Watch out: a quarter needs four equal parts. Parts that are not the same size are not quarters.
Exam tip
Grown-up tip. Fold a square of paper in half, then in half again. Open it up and count the four parts. Each part is one quarter.
Exercise 10D One quarter of a shape
Non-calculatorMethod. One quarter is one of 4 equal parts. Check the parts and the shading.
- Count the parts. One quarter needs 4 equal parts.4 parts
- Check the parts are the same size. Equal parts are the same size.The parts are the same size.
- Count the shaded parts. We need exactly one shaded part for one quarter.1 shaded
- Decide. Yes. The shaded part is one quarter.
Check. Say it in words: the shaded part is one quarter. ✓
Watch out. Parts must be the same size before you can call them halves or quarters.
Method. One quarter is one of 4 equal parts. Check the parts and the shading.
- Count the parts. One quarter needs 4 equal parts.4 parts
- Check the parts are the same size. Equal parts are the same size.The parts are the same size.
- Count the shaded parts. We need exactly one shaded part for one quarter.1 shaded
- Decide. Yes. The shaded part is one quarter.
Check. Say it in words: the shaded part is one quarter. ✓
Watch out. Parts must be the same size before you can call them halves or quarters.
Method. One quarter is one of 4 equal parts. Check the parts and the shading.
- Count the parts. One quarter needs 4 equal parts.4 parts
- Check the parts are the same size. Equal parts are the same size.The parts are the same size.
- Count the shaded parts. We need exactly one shaded part for one quarter.3 shaded
- Decide. No. 3 parts are shaded, not one, so it is not one quarter.
Check. Say it in words: the shaded part is not one quarter. ✓
Watch out. Parts must be the same size before you can call them halves or quarters.
Method. One quarter is one of 4 equal parts. Check the parts and the shading.
- Count the parts. One quarter needs 4 equal parts.4 parts
- Check the parts are the same size. Equal parts are the same size.The parts are the same size.
- Count the shaded parts. We need exactly one shaded part for one quarter.1 shaded
- Decide. Yes. The shaded part is one quarter.
Check. Say it in words: the shaded part is one quarter. ✓
Watch out. Parts must be the same size before you can call them halves or quarters.
Method. One quarter is one of 4 equal parts. Check the parts and the shading.
- Count the parts. One quarter needs 4 equal parts.2 parts
- Check the parts are the same size. Equal parts are the same size.The parts are the same size.
- Count the shaded parts. We need exactly one shaded part for one quarter.1 shaded
- Decide. No. The shape has 2 equal parts, not 4, so the shaded part is not one quarter.
Check. Say it in words: the shaded part is not one quarter. ✓
Watch out. Parts must be the same size before you can call them halves or quarters.
Method. Four equal quarters make one whole shape.
- Count the equal parts in the whole shape. Each part is one quarter.4 quarters
- Think about how many make a whole. All four quarters together make the whole shape.1 + 1 + 1 + 1 = 4 quarters
- Write the answer. 4
Check. Count the quarters again: 1, 2, 3, 4. ✓
Watch out. Four quarters make one whole. Do not count only the shaded parts.
Method. Touch each one once and say one number each. The last number is how many there are.
- Count each one and say its number. Each one gets one number, in order.1, 2
- Look at the last number. The last number tells us how many there are.The last number is 2.
- Write the answer. 2
Check. Count again from the other side. You get 2 again. ✓
Watch out. Move each one to one side as you count it, so you do not lose your place.
Method. Count how many quarters fit into one half.
- Start with one half. One half is shared into equal quarters.One half
- Count the quarters that fit. Each quarter is one of the equal parts.2 quarters fit into one half
- Write the answer. 2
Check. Put them together: one quarter + one quarter = one half. ✓
Watch out. Check the size. More quarters make one half because each quarter is smaller.
Method. Look at each picture and find the one with 4 equal parts.
- Look at A. Count the equal parts and the shaded parts.A: 3 parts, not equal, 0 shaded
- Look at B. Count the equal parts and the shaded parts.B: 5 parts, equal, 0 shaded
- Look at C. Count the equal parts and the shaded parts.C: 4 parts, equal, 0 shaded
- Find the picture that matches. We want the picture with 4 equal parts.Matches: C
- Write the answer. C
Check. A and B do not match. ✓
Watch out. Count the equal parts first, then the shaded parts.
Method. Look at each picture and find the one with one quarter shaded.
- Look at A. Count the equal parts and the shaded parts.A: 2 parts, equal, 1 shaded
- Look at B. Count the equal parts and the shaded parts.B: 4 parts, equal, 1 shaded
- Look at C. Count the equal parts and the shaded parts.C: 4 parts, equal, 3 shaded
- Find the picture that matches. We want the picture with one quarter shaded.Matches: B
- Write the answer. B
Check. A and C do not match. ✓
Watch out. Count the equal parts first, then the shaded parts.
Method. A quarter is one of four equal parts. A half is one of two equal parts.
- Look at one quarter. A quarter is smaller, because it is one of four parts.Four parts
- Look at one half. A half is one of two parts, so each part is bigger.Two parts
- Compare them. The part with more parts is smaller.A quarter is smaller than a half.
- Write the answer. No. A quarter is smaller than a half.
Check. Two quarters make one half, so one half must be bigger than one quarter. ✓
Watch out. More equal parts means each part is smaller.
Method. Four equal slices make the whole pizza. One slice is one quarter.
- Count the equal slices. The pizza is cut into four equal slices.4 slices
- Look at the slice Ravi ate. It is one of the four equal slices.One of 4 equal slices
- Write the answer. one quarter
Check. Four quarter slices would make the whole pizza. ✓
Watch out. Use the words “one quarter” for one of four equal parts.
Method. Count the shaded quarters in each picture, then pick the biggest number.
- Look at A. Count the shaded quarters.A: 2 of 4 quarters shaded
- Look at B. Count the shaded quarters.B: 1 of 4 quarters shaded
- Look at C. Count the shaded quarters.C: 3 of 4 quarters shaded
- Find the most shaded. The picture with the most shaded quarters is the answer.C has the most shaded
- Write the answer. C
Check. The others have fewer shaded quarters. ✓
Watch out. Count the shaded parts. Do not choose the picture that just looks the most coloured.