Khan Academy
Khan Academy: Subtracting 3 Digit Numbers (No Regrouping)
Sal shows how to subtract 357-251 (without regrouping) using place value. Includes a video, transcript, and question and answer section. [2:56]
Khan Academy
Khan Academy: Subtracting 1s, 10s, and 100s
Sal demonstrates visually how to subtract 3-digit numbers by subtracting ones, tens, and hundreds. Includes a video, transcript, and question and answer section. [3:11]