The grade 1 worksheets on this page will help the students practice & sharpen the concepts for ‘Addition and Subtraction – Addition & Subtraction Equations.’ An equation is a mathematical sentence that has two sides, separated by an equal sign, where both sides are equal. For example, 10 – 2 = 8 is an equation, as both sides evaluate to 8 and are equal. For an equation to be ‘true’, both sides of the equal sign must evaluate to the same number or else it is not considered ‘true’. The worksheets use different variations to reinforce student’s understanding of the concept, while keeping them engaged and challenged.