Determine if Equations are True or False

(E) Understand that the equal sign represents a relationship where expressions on each side of the equal sign represent the same value(s)

(A) Recall basic facts to add and subtract within 20 with automaticity

(Y1) Represent and solve simple addition and subtraction problems using a range of strategies including counting on, partitioning and rearranging parts (ACMNA015)

(Y2) Solve simple addition and subtraction problems using a range of efficient mental and written strategies (ACMNA030)

1.OA.7 Understand the meaning of the equal sign, and determine if equations involving addition and subtraction are true or false. For example, which of the following equations are true and which are false? 6 = 6, 7 = 8 - 1, 5 + 2 = 2 + 5, 4 + 1 = 5 + 2.

2.OA.2 Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.