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Mental addition and subtraction
'Mental addition and subtraction' worksheets
Worksheet 1
Splitting up numbers
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worksheet 1
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answers 1
Worksheet 2
Hundreds, tens and ones
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worksheet 2
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answers 2
Worksheet 3
Rounding
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worksheet 3
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answers 3
Worksheet 4
Empty number lines
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worksheet 4
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answers 4
Worksheet 5
Doubling
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worksheet 5
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answers 5
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