1stMathStandard1

Standard 1: Students will acquire number sense and perform simple operations with whole numbers.

Objective 1: Represent and use whole numbers up to 100. a. Count, read, and write whole numbers. b. Represent whole numbers using the number line, models, and number sentences. c. Represent whole numbers greater than 10 in groups of tens and ones using objects, pictures, and expanded notation.



Objective 2: Identify simple relationships among whole numbers up to 100. a. Compare and order sets of objects and numbers using the terms greater than, less than, and equal to when describing the comparisons. b. Make reasonable estimates of the quantitative difference between two sets of objects. c. Identify one more, one less, 10 more, and 10 less than a given number. d. Identify numbers missing from a counting sequence. e. Represent part-whole relationships using the number line.

Objective 3: Model, describe, and illustrate the meanings of addition and subtraction and use these operations to solve problems. a. Use a variety of models, including objects, length-based models, the number line and thten frame to describe problem types (i.e., part-whole, combine, separate, compare). b. Use the properties of addition (i.e., commutativity, associativity, identity element) and the mathematical relationship between addition and subtraction to solve problems. c. Compute basic addition facts (up to 10 + 10) and the related subtraction facts using strategies (e.g., 6 + 7 = (6 + 4) + 3 = 10 + 3 = 13). d. Find the sum of three one-digit numbers.