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Worksheet
Curated OER

Add and Subtract within 20

For Students 1st - 3rd
These true equations are missing numbers. Scholars examine a set of possible answers to fill in each of the nine equations. Consider covering up the answer options, as it may be more helpful to have learners simply figure these out...
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Worksheet
Curated OER

Add and Subtract Equations With Equal Sign - Guided Lesson Explanation

For Students 1st
What sign is missing? Is this equation true? Rather than a worksheet, this resource is a one-page script for a guided lesson on addition and subtraction equations. While the pupil handout is missing, the teacher guide could be...