2.0 Solve addition and subtraction word problems, and add and subtract within 10, e.g., by using objects or drawings to
represent the problem.

Represent and solve problems involving addition and subtraction.
2. 0 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.

Add and subtract within 20.
2. Fluently add and subtract within 20 using mental strategies.2 By end of Grade 2, know from memory all sums of two
onedigit numbers.

2.0 Interpret wholenumber quotients of whole numbers, e.g., interpret 56 ÷ 8 as the number of objects in each share when 56
objects are partitioned equally into 8 shares, or as a number of shares when 56 objects are partitioned into equal shares of 8
objects each. For example, describe a context in which a number of shares or a number of groups can be expressed as 56÷8.

2.0 Multiply or divide to solve word problems involving multiplicative comparison, e.g., by using drawings and equations with a
symbol for the unknown number to represent the problem, distinguishing multiplicative comparison from additive comparison.1

2.0 Write simple expressions that record calculations with numbers, and interpret numerical expressions without evaluating
them. For example, express the calculation “add 8 and 7, then multiply by 2” as 2 × (8 + 7). Recognize that
3 × (18932 + 921) is three times as large as 18932 + 921, without having to calculate the indicated sum or product.
2.1 Express a whole number in the range 2–50 as a product of its prime factors. For example, find the prime factors of 24 and
express 24 as 2 × 2 × 2 × 3. CA
Analyze patterns and relationships.
