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Column subtraction Yesterday we learnt to subtract vertically in columns Can you remember the main things to remember? © www.SaveTeachersSundays.com 2013.

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Presentation on theme: "Column subtraction Yesterday we learnt to subtract vertically in columns Can you remember the main things to remember? © www.SaveTeachersSundays.com 2013."— Presentation transcript:

1 Column subtraction Yesterday we learnt to subtract vertically in columns Can you remember the main things to remember? ©

2 Column subtraction Start on the right-hand side
Put only number in a square Write the - Put units under units and tens under tens ©

3 Column subtraction Can you remember the advantage of using column subtraction? It is easier and quicker than number lines & hundred squares! ©

4 Column subtraction 57 - 25 57 - 25 and we can make it even quicker!
Model how to set out column subtraction with partitioning, and then without partitioning. Emphasise how without partitioning is quicker ©

5 © www.SaveTeachersSundays.com 2013
Column subtraction 8 - 2 ©

6 © www.SaveTeachersSundays.com 2013
Column subtraction ©

7 © www.SaveTeachersSundays.com 2013
Column subtraction 56 - 4 ©

8 © www.SaveTeachersSundays.com 2013
Column subtraction 95 - 5 ©

9 © www.SaveTeachersSundays.com 2013
Column subtraction ©

10 © www.SaveTeachersSundays.com 2013
Column subtraction ©

11 © www.SaveTeachersSundays.com 2013
Column subtraction ©

12 © www.SaveTeachersSundays.com 2013
Column subtraction 4.8 – 1.1 ©

13 Column subtraction Start on the right-hand side
Put only number in a square Write the - Put units under units and tens under tens ©

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