Count groups of ten and extra ones | Maths | Quizalize & Oak National Academy

Starter quiz

Sort these numbers in the order you would say when counting forwards.

1

⇔

30

2

⇔

40

3

⇔

50

4

⇔

60
How many tens can you see in the picture?

'6' ✓
Which of the following represents the number shown on the Gattegno chart.

7 tens 4 ✓

5 tens 6

4 tens 7
Laura has 50 counters. She wants to record this on the place value chart. Which place value chart is correct?
How many tens are in the number thirty?

'3' ✓
Match the numerals to the words that have the same value.

fifty

⇔

50 ✓

forty

⇔

40 ✓

eighty

⇔

80 ✓

Exit quiz

Look at the picture and fill in the missing number. There are 7 groups of ten and ______ extra ones.

'6' ✓
Which of the following shows ten?
Which Gattegno chart represents the groups of tens and ones shown?
Laura puts the pencils into groups of ten. She has 8 tens and 6 extra ones. If they were counted in ones, how many ones would there be altogether?

'86' ✓
Which place value chart represents the picture shown?
Match the words to the numerals that have the same value.

fifty-six

⇔

56 ✓

sixty-five

⇔

65 ✓

thirty-two

⇔

32 ✓

twenty-three

⇔

23 ✓

Worksheet

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Video

Lesson Details

Key learning points

Ten ones are equivalent to one ten.
When counting larger groups, it is more efficient to group objects into tens, then count the tens and extra ones.
We can work out how many there are by counting in ones, or by counting the groups of ten and extra ones.

Common misconception

Children may only think of 'ones' in terms of the extra ones after the tens have been grouped, so may fail to see 45, for example, as 45 ones as well as 4 tens and 5 ones.

When objects are grouped in tens, use deliberate errors and discussion to draw attention to the total number of ones represented by the number, so children are familiar with recognising both the extra ones and the total number of ones in a number.

Keywords

Digit - A single symbol used to make a numeral.