Explain the difference between consecutive odd numbers

I can explain the difference between consecutive odd numbers.

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Year 1

Explain the difference between consecutive odd numbers

I can explain the difference between consecutive odd numbers.

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Share activities with pupils

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Lesson details

Key learning points

Consecutive odd numbers have a difference of 2
We can use this knowledge to solve missing number problems when 2 is the known part.

Keywords

Difference - The result of subtracting one number from another.
Odd - Any integer (not a fraction) that cannot be divided exactly by 2
Consecutive - Numbers which follow each other in order, without gaps, from smallest to largest.

Common misconception

Children may resort to counting strategies without noticing that the relationship between the minuend and the subtrahend is that there is a difference of two.

Draw out the patterns that will allow children to solve these equations without needing to using counting strategies. For example, 5 + 2 and 2 + 5 are 'odd number after'; 7 - 2 is 'odd number before' and 7 - 5 is 'difference of two'.

The sequence of steps in this lesson are the same as those in that for finding the difference between consecutive numbers, but now we are exploring a difference of two rather than one.

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).