Rhode Island Standards
RI.M:N&O:1. NECAP - Grade Level Expectation: Number and Operation.
M:N&O:1:3. Demonstrates conceptual understanding of mathematical operations involving addition and subtraction of whole numbers (from 0 to 30) by solving problems involving joining actions, separating actions, part-part whole relationships, and comparison situations; and addition of multiple one-digit whole numbers.
M:N&O:1:6. Mentally adds and subtracts whole numbers by naming the number that is one or two more or less than the original number; and adds and subtracts whole number facts to ten (e.g., 5 + 3 = 8; 8 - 5 = 3).
M:N&O:1:8. Applies properties of numbers (odd, even, composition, and decomposition) and field properties (commutative and identity for addition) to solve problems and to simplify computations involving whole numbers.