# Count efficiently in groups of ten

I can count in groups of ten and identify how many groups there are.

# Count efficiently in groups of ten

I can count in groups of ten and identify how many groups there are.

## Slide deck

## Lesson details

### Key learning points

- Objects can be put into groups of 10 to make them easier to count.
- Groups of 10 can be called tens.
- It is more efficient to skip count in tens than to count in ones
- Counting back in tens from the total amount can be used to check that the count was accurate.

### Common misconception

Children may confuse the number of groups with the amount altogether, for example, they may count 4 groups of 10 as 4 not 40 They may also confuse the number of groups with the group size.

Draw a ring around each group of 10 whilst using the stem sentence to help describe what you are seeing as you identify each group.

### Keywords

Groups of 10 - Groups of ten objects that can be counted in tens.

Tens - Another name for the multiples of ten.

Decade numbers - These are the multiples of ten which mark the tens boundary where the pattern of counting changes.

Altogether - The amount in the whole set or group.

Efficiently - Not wasting time or effort. An efficient strategy is one we can carry out easily.

### Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

## Video

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## Worksheet

## Starter quiz

### 6 Questions

## Exit quiz

### 6 Questions

100

10

70