Learning Domain: Number and Operations in Base Ten

Standard: Understand that the two digits of a two-digit number represent amounts of tens and ones: Unitize by making a ten from a collection of ten ones; Model the numbers from 11 to 19 as composed of a ten and one, two, three, four, five, six, seven, eight, or nine ones; Demonstrate that the numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 refer to one, two, three, four, five, six, seven, eight, or nine tens, with 0 ones.

Degree of Alignment: Not Rated (0 users)

Learning Domain: Number and Operations in Base Ten

Standard: Using concrete models or drawings, strategies based on place value, properties of operations, and explaining the reasoning used, add, within 100, in the following situations: A two-digit number and a one-digit number; A two-digit number and a multiple of 10.

Degree of Alignment: Not Rated (0 users)

Learning Domain: Number and Operations in Base Ten

Standard: Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.

Degree of Alignment: Not Rated (0 users)

Learning Domain: Number and Operations in Base Ten

Standard: Subtract multiples of 10 in the range 10-90 from multiples of 10 in the range 10-90, explaining the reasoning, using: Concrete models and drawings; Number lines; Strategies based on place value; Properties of operations; The relationship between addition and subtraction.

Degree of Alignment: Not Rated (0 users)

Learning Domain: Operations and Algebraic Thinking

Standard: Represent and solve addition and subtraction word problems, within 20, with unknowns, by using objects, drawings, and equations with a symbol for the unknown number to represent the problem, when solving: Add to/Take from-Change Unknown; Put together/Take Apart-Addend Unknown; Compare-Difference Unknown.

Degree of Alignment: Not Rated (0 users)

Learning Domain: Operations and Algebraic Thinking

Standard: Apply the commutative and associative properties as strategies for solving addition problems.

Degree of Alignment: Not Rated (0 users)

Learning Domain: Operations and Algebraic Thinking

Standard: Apply understanding of the equal sign to determine if equations involving addition and subtraction are true.

Degree of Alignment: Not Rated (0 users)