Subtract multiples of ten from 2-digit numbers
I can use number facts to subtract multiples of ten from a two-digit number.
Subtract multiples of ten from 2-digit numbers
I can use number facts to subtract multiples of ten from a two-digit number.
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Lesson details
Key learning points
- When subtracting multiples of ten from a two-digit number, the tens digit changes but the ones digit stays the same.
- We can use number facts to help us subtract multiples of ten from a two-digit number.
Keywords
Multiples of ten - The numbers that are said when we count on in tens from zero. Multiples of ten always have a ones digit of zero.
Recombine - To add the parts of a number gained through partitioning the whole to reach the whole again.
Common misconception
Children may automatically count back in tens to subtract a multiple of ten.
Discuss efficiency and compare different methods. Use practical equipment to draw attention to the relationship between adding multiples of ten in two-digit numbers and the known facts they already possess.
To help you plan your year 2 maths lesson on: Subtract multiples of ten from 2-digit numbers, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 2 maths lesson on: Subtract multiples of ten from 2-digit numbers, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
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Explore more key stage 1 maths lessons from the Adding and subtracting ones and tens to and from 2-digit numbers unit, dive into the full secondary maths curriculum, or learn more about lesson planning.
Licence
Lesson video
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Starter quiz
6 Questions
2 tens + 4 tens = 6 tens
50 + 30 = 80
40 + 50 = 90
Exit quiz
6 Questions
5 tens − 2 tens = 3 tens
80 − 60 = 20
90 − 40 = 50
