New
New
Year 1

# Order and compare decade numbers on number tracks

I can order the decade numbers 0-100 on a number track and say which number is greater than or less than another.

New
New
Year 1

# Order and compare decade numbers on number tracks

I can order the decade numbers 0-100 on a number track and say which number is greater than or less than another.

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## Lesson details

### Key learning points

1. Decade numbers can be ordered on a number track by counting in tens or by looking at the number of tens in the number.
2. You can compare decade numbers using greater than and less than.

### Common misconception

Children may think that only consecutive numbers can be ordered.

Order non-consecutive numbers, then place back with other numbers on number track to consolidate understanding of their relative size.

### Keywords

• Greater than - Greater means a larger amount, so if a number is greater than another, it represents a larger amount.

• Less than - Less means a smaller amount, so if a number is less than another, it represents a smaller amount.

Ensure that children have opportunities to see decade numbers and to work practically with groups of 10 objects, so they gain a sense of the size of the quantities they represent.
Teacher tip

### 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).

## Starter quiz

### 6 Questions

Q1.
Look at these numbers 70, 80, 90, 100. Complete the stem sentence. They are all numbers.
Q2.
Match the decade numbers to the number of groups of 10 they have.

4 tens

7 tens

10 tens

1 ten

Q3.
Put these decade numbers in the order you would say when counting forwards.
1 - 30
2 - 40
3 - 50
4 - 60
Q4.
How many tens are in this number?
50
70
Q5.
How many fingers are there altogether?
8
80
Q6.
Put these decade numbers in the order you would say when counting backwards.
1 - 100
2 - 90
3 - 80
4 - 70

## Exit quiz

### 6 Questions

Q1.
Which numbers are missing from the number track?
30 and 40
Correct answer: 40 and 50
50 and 60
Q2.
Izzy wants to put these numbers in the correct order on her number track. Which would she place first if counting forwards?
80
60
Q3.
A number on the number track is hidden. Which of these numbers must it be?
80
30
Q4.
Look at the image. Which of the following 2 numbers are greater than 50?
30 and 40
100 and 40
Correct answer: 60 and 70
Q5.
Complete the stem sentence. 60 is than 90.
greater