Suitable for Grades: 1st Grade
CCSS: 1.OA.D.7, 1.OA.D.8
CCSS Description: 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.
Determine the unknown whole number in an addition or subtraction equation relating three whole numbers. For example, determine the unknown number that makes the equation true in each of the equations 8 + ? = 11, 5 = � – 3, 6 + 6 = �.
Here children must select the correct numbers from either three or four to make subtraction statements true where the answer is given. All numbers are single digits.