Caterpillar calculations

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Presentation transcript:

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.

Jan Blanthorn-Hazell. Click to activate each calculation. 2 + 1 = 3 3 - 1 = 2 Jan Blanthorn-Hazell. Click to activate each calculation.

Jan Blanthorn-Hazell. Click to activate each calculation. 3 + 2 = 5 5 - 2 = 3 Jan Blanthorn-Hazell. Click to activate each calculation.

Jan Blanthorn-Hazell. Click to activate each calculation. 4 + 3 = 7 7 - 3 = 4 Jan Blanthorn-Hazell. Click to activate each calculation.