Caterpillar calculations

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Caterpillar calculations. Year 1 - LO To understand addition and subtraction (and that one is the inverse of the other!). 2 + 1 =. 3. 2. 3 - 1 =. 5. 3 + 2 =. 5 - 2 = . 3. 4 + 3 = . 7 . 7 - 3 = . 4.

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Dec 16, 2013

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Caterpillar calculations

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Caterpillar calculations Year 1 - LO To understand addition and subtraction (and that one is the inverse of the other!) Jan Blanthorn-Hazell. Click to activate each calculation.
2 + 1 = 3 2 3 - 1 = Jan Blanthorn-Hazell. Click to activate each calculation.
5 3 + 2 = 5 - 2 = 3 Jan Blanthorn-Hazell. Click to activate each calculation.
4 + 3 = 7 7 - 3 = 4 Jan Blanthorn-Hazell. Click to activate each calculation.