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Arithmetic ability: level three: mental subtraction of four-digit numbers.

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8118 - 4567 =

8113 - 3652 =

4559 - 2832 =

8290 - 6646 =

2768 - 1331 =

9653 - 8408 =

6110 - 5899 =

7525 - 3270 =

6741 - 2107 =

5214 - 1609 =

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metodorf.com



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