Addition-3rd

Grade-level Expectations for 3rd Grade - Recognize equivalent representations for the same number and generate them by decomposing and composing numbers including expanded notation - Apply and describe the strategy used to compute up to 3-digit addition or subtraction problems

Example Strategy:

483 + 358 = 400 + 300 = 700 80 + 50 = 130 3 + 8 = 11 700 + 130 + 11 = 841

Example Strategy: 297 + 768 = (297 + 3) + (768 - 3) = 300 + 765 = 1,065