Solve addition and subtraction word problems, and Solve word problems that call for addition of three add and subtract within 10, e.g., by using objects whole numbers whose sum is less than or equal to or drawings to represent the problem. 20, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem. Use addition and subtraction within 100 to solve Use multiplication and division within 100 to solve one- and two-step word problems involving word problems in situations involving equal situations of adding to, taking from, putting groups, arrays, and measurement quantities, e.g., together, taking apart, and comparing, with by using drawings and equations with a symbol for unknowns in all positions, e.g., by using drawings the unknown number to represent the problem. and equations with a symbol for the unknown number to represent the problem.
Solve addition and subtraction word problems, and add and subtract within 10, e.g., by using objects or drawings to represent the problem. Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem. Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem. Use multiplication and division within 100 to solve word problems in situations involving equal groups, arrays, and measurement quantities, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.