Suitable for Grades: 1st Grade, 2nd Grade
CCSS: 1.OA.D.8, 2.OA.B.2
CCSS Description: 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 = �.
Fluently add and subtract within 20 using mental strategies.2 By end of Grade 2, know from memory all sums of two one-digit numbers.
These addition grids enable children to understand the commutative property of addition as they find the sum of numbers at the top of each column and start of each row.
students will be adding two numbers from 1 to 10 inclusive.
All our primary resources include space for students' names and the date.