Year 1: Sharing and grouping
Part of the Year 1 grouping and sharing chapter. Chapter overview · whole chapter on one page · Download worksheet (PDF) · Answers (PDF)
Sharing and grouping
Sharing means dealing things out so everyone gets the same number. We know how many people there are, and we find how many each person gets.
Grouping means making groups of the same size. We know how many are in each group, and we find how many groups there are.
Key ideas
- Sharing: we know how many groups, and find how many in each.
- Grouping: we know how many in each group, and find how many groups.
- Deal one at a time to share fairly.
- Check that the shares add up to the total.
Key words. To share is to deal things out so everyone has the same number.
Method. Deal the things out one at a time, so that every person gets the same number.
- Count the cubes in the pile. Start with the whole pile.8
- Deal them out to 4 people, one at a time. Each person gets one, then the next one, until all are shared.Each person gets 2
- Check the shares. Every share is the same. Add them to check.2 + 2 + 2 + 2 = 8
- Write the answer. Each person gets 2.2
Check. Add the shares: 2 + 2 + 2 + 2 = 8. ✓
Watch out. Give everyone one each, then go round again. Do not give one person all of the extra things.
Key words. To share is to deal things out so everyone has the same number.
Method. Deal the things out one at a time, so that every person gets the same number.
- Count the stars in the pile. Start with the whole pile.10
- Deal them out to 2 people, one at a time. Each person gets one, then the next one, until all are shared.Each person gets 5
- Check the shares. Every share is the same. Add them to check.5 + 5 = 10
- Write the answer. Each person gets 5.5
Check. Add the shares: 5 + 5 = 10. ✓
Watch out. Give everyone one each, then go round again. Do not give one person all of the extra things.
Key words. A group is a set of things that belong together.
Method. Put 3 in each group, and keep going until none are left. Then count the groups.
- Make a group with 3 cubes. Each group must have the same number.1 group of 3
- Keep making groups until none are left. There are 12 in all, so count the groups as you make them.3 + 3 + 3 + 3 = 12
- Count the groups. Each group is one group.4 groups
Check. Each group has 3, and 4 groups make 12. ✓
Watch out. Count the groups, not the cubes. There are 4 groups.
Watch out
Watch out: sharing asks how many in each group. Grouping asks how many groups. Read the question carefully to see which one it is.
Exam tip
Grown-up tip. Use a plate or cup for each person. Ask your child to deal one thing at a time to each plate, then ask: “Is it fair? How many are on each plate?”
Exercise 9F Sharing and grouping
Non-calculatorKey words. To share is to deal things out so everyone has the same number.
Method. Deal the things out one at a time, so that every person gets the same number.
- Count the biscuits in the pile. Start with the whole pile.4
- Deal them out to 2 people, one at a time. Each person gets one, then the next one, until all are shared.Each person gets 2
- Check the shares. Every share is the same. Add them to check.2 + 2 = 4
- Write the answer. Each person gets 2.2
Check. Add the shares: 2 + 2 = 4. ✓
Watch out. Give everyone one each, then go round again. Do not give one person all of the extra things.
Key words. To share is to deal things out so everyone has the same number.
Method. Deal the things out one at a time, so that every person gets the same number.
- Count the biscuits in the pile. Start with the whole pile.6
- Deal them out to 2 people, one at a time. Each person gets one, then the next one, until all are shared.Each person gets 3
- Check the shares. Every share is the same. Add them to check.3 + 3 = 6
- Write the answer. Each person gets 3.3
Check. Add the shares: 3 + 3 = 6. ✓
Watch out. Give everyone one each, then go round again. Do not give one person all of the extra things.
Key words. To share is to deal things out so everyone has the same number.
Method. Deal the things out one at a time, so that every person gets the same number.
- Count the stars in the pile. Start with the whole pile.9
- Deal them out to 3 people, one at a time. Each person gets one, then the next one, until all are shared.Each person gets 3
- Check the shares. Every share is the same. Add them to check.3 + 3 + 3 = 9
- Write the answer. Each person gets 3.3
Check. Add the shares: 3 + 3 + 3 = 9. ✓
Watch out. Give everyone one each, then go round again. Do not give one person all of the extra things.
Key words. To share is to deal things out so everyone has the same number.
Method. Deal the things out one at a time, so that every person gets the same number.
- Count the pencils in the pile. Start with the whole pile.10
- Deal them out to 5 people, one at a time. Each person gets one, then the next one, until all are shared.Each person gets 2
- Check the shares. Every share is the same. Add them to check.2 + 2 + 2 + 2 + 2 = 10
- Write the answer. Each person gets 2.2
Check. Add the shares: 2 + 2 + 2 + 2 + 2 = 10. ✓
Watch out. Give everyone one each, then go round again. Do not give one person all of the extra things.
Key words. A group is a set of things that belong together.
Method. Put 3 in each group, and keep going until none are left. Then count the groups.
- Make a group with 3 cubes. Each group must have the same number.1 group of 3
- Keep making groups until none are left. There are 6 in all, so count the groups as you make them.3 + 3 = 6
- Count the groups. Each group is one group.2 groups
Check. Each group has 3, and 2 groups make 6. ✓
Watch out. Count the groups, not the cubes. There are 2 groups.
Key words. A group is a set of things that belong together.
Method. Put 4 in each group, and keep going until none are left. Then count the groups.
- Make a group with 4 balls. Each group must have the same number.1 group of 4
- Keep making groups until none are left. There are 8 in all, so count the groups as you make them.4 + 4 = 8
- Count the groups. Each group is one group.2 groups
Check. Each group has 4, and 2 groups make 8. ✓
Watch out. Count the groups, not the balls. There are 2 groups.
Key words. A group is a set of things that belong together.
Method. Put 2 in each group, and keep going until none are left. Then count the groups.
- Make a group with 2 socks. Each group must have the same number.1 group of 2
- Keep making groups until none are left. There are 10 in all, so count the groups as you make them.2 + 2 + 2 + 2 + 2 = 10
- Count the groups. Each group is one group.5 groups
Check. Each group has 2, and 5 groups make 10. ✓
Watch out. Count the groups, not the socks. There are 5 groups.
Key words. To share is to deal things out so everyone has the same number.
Method. Deal the things out one at a time, so that every person gets the same number.
- Count the apples in the pile. Start with the whole pile.10
- Deal them out to 2 people, one at a time. Each person gets one, then the next one, until all are shared.Each person gets 5
- Check the shares. Every share is the same. Add them to check.5 + 5 = 10
- Write the answer. Each person gets 5.5
Check. Add the shares: 5 + 5 = 10. ✓
Watch out. Give everyone one each, then go round again. Do not give one person all of the extra things.
Key words. To share is to deal things out so everyone has the same number.
Method. Deal the things out one at a time, so that every person gets the same number.
- Count the apples in the pile. Start with the whole pile.10
- Deal them out to 5 people, one at a time. Each person gets one, then the next one, until all are shared.Each person gets 2
- Check the shares. Every share is the same. Add them to check.2 + 2 + 2 + 2 + 2 = 10
- Write the answer. Each person gets 2.2
Check. Add the shares: 2 + 2 + 2 + 2 + 2 = 10. ✓
Watch out. Give everyone one each, then go round again. Do not give one person all of the extra things.
Key words. To share is to deal things out so everyone has the same number.
Method. Deal the things out one at a time, so that every person gets the same number.
- Count the apples in the pile. Start with the whole pile.10
- Deal them out to 10 people, one at a time. Each person gets one, then the next one, until all are shared.Each person gets 1
- Check the shares. Every share is the same. Add them to check.1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 = 10
- Write the answer. Each person gets 1.1
Check. Add the shares: 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 = 10. ✓
Watch out. Give everyone one each, then go round again. Do not give one person all of the extra things.
Key words. To share is to deal things out so everyone has the same number.
Method. Deal the things out one at a time, so that every person gets the same number.
- Count the stickers in the pile. Start with the whole pile.15
- Deal them out to 3 people, one at a time. Each person gets one, then the next one, until all are shared.Each person gets 5
- Check the shares. Every share is the same. Add them to check.5 + 5 + 5 = 15
- Write the answer. Each person gets 5.5
Check. Add the shares: 5 + 5 + 5 = 15. ✓
Watch out. Give everyone one each, then go round again. Do not give one person all of the extra things.
Key words. A group is a set of things that belong together.
Method. Put 4 in each group, and keep going until none are left. Then count the groups.
- Make a group with 4 biscuits. Each group must have the same number.1 group of 4
- Keep making groups until none are left. There are 12 in all, so count the groups as you make them.4 + 4 + 4 = 12
- Count the groups. Each group is one group.3 groups
Check. Each group has 4, and 3 groups make 12. ✓
Watch out. Count the groups, not the biscuits. There are 3 groups.
Method. Count how many sweets each child has. Is the sharing equal?
- Count Ruby’s sweets. Ruby keeps 3 sweets.Ruby: 3
- Count her friend’s sweets. Her friend gets 5 sweets.Friend: 5
- Compare the numbers. Equal sharing means both get the same number.5 is not 3
- Write the answer. No. Ruby does not share equally, so it is not fair.
Check. Equal sharing of 8 between 2 people would give 4 each. 3 and 5 are not the same. ✓
Watch out. Fair sharing means the same number for each person.