Subtraction-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: 214 - 97 = 214 - 90 = 124 124 - 7 = 117

Example Strategy:

602 - 289 = 602 - (3 + 286) = 602 - 3 = 599 599 - 286 = 313