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Friday, June 14, 2013

My Maths

I have been learning to use - Place Value - to solve my maths problems.

62 - 47 = ?
- 60 - 40 = 20
- 20 - 7 = 13
- 13 + 2 = 15
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31 - 19 = ?
- 30 - 10 = 20
- 20 - 9 = 11
- 11 + 1 = 12
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61 - 23 =?
- 60 - 20 = 40
- 40 - 3 = 37
- 37 + 1 =  38

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