Oklahoma Academic Standards
OK.2.N. Number & Operations (N)
2.N.1. Compare and represent whole numbers up to 1,000 with an emphasis on place value and equality.
2.N.1.1. Read, write, discuss, and represent whole numbers up to 1,000. Representations may include numerals, words, pictures, tally marks, number lines and manipulatives.
2.N.1.4. Find 10 more or 10 less than a given three-digit number. Find 100 more or 100 less than a given three-digit number.
2.N.2. Add and subtract one- and two-digit numbers in real-world and mathematical problems.
2.N.2.2. Demonstrate fluency with basic addition facts and related subtraction facts up to 20.
2.N.2.4. Use strategies and algorithms based on knowledge of place value and equality to add and subtract two-digit numbers.