Number Operations

In First Grade

First grade students generated and solved problems within 20 using basic fact strategies, concrete and pictorial models and number sentences. Students also determined the unknown whole number in an addition or subtraction equation when the unknown can be any one of the three or four terms in a number sentence.

In Second Grade

Second grade students solve one-step and two-step word problems involving addition and subtraction within 1,000 using the strategies of place value, properties of operations, mental strategies. Students also solve problems when given a mathematical number sentence involving addition and subtraction within 1,000. Students must also be able to recall the basic addition and subtraction facts within 20 with automaticity.

The beginning concepts of multiplication and division are introduced by modeling, creating, and describing contextual multiplication and division situations.

In Third Grade

Students in third grade solve and represent one- and two-step problems involving addition and subtraction within 1,000 using pictorial models, number lines, and equations, and solve and represent one- and to-step problems involving multiplication and division within 100 using arrays, strip diagrams, and equations.  Students also multiply a two-digit number by a one-digit number, recall multiplication facts up to 10 by 10 with automaticity along with the corresponding division facts. In third grade, students also use compatible numbers to round numbers to the nearest 10 or 100, and use paired numbers in a table.