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Year 1 Numeracy worksheet focusing on vertical addition sums up to 20, designed for classroom use.

A Year 1 Numeracy worksheet titled "Addition vertical to 20" with 20 addition problems arranged in a grid format, including spaces for students to write their answers. The worksheet includes fields for name, date, and score, and is from Primary Leap Ltd, 2008.

A Year 1 Numeracy worksheet titled "Addition vertical to 20" with 20 addition problems arranged in a grid format, including spaces for students to write their answers. The worksheet includes fields for name, date, and score, and is from Primary Leap Ltd, 2008.

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