I can find unknowns in addition equations by using number bonds.
*Use the number line
Determine the unknown whole number in an addition or subtraction equation relating three whole numbers.
Unpacking - First graders use their understanding of and strategies related to addition and subtraction in 1OA4 and 1OA6 to solve equations with an unknown. Rather than symbols, the unknown symbols are boxes or pictures.
*Let’s use boxes for unknowns as this prepares them for 2nd grade and up.
*count on using number lines, cubes, ten frames, and/or drawing circles