Subtraction Level 7: 2d - 2d (no borrow). visible-place subtraction. 1. Release tens83 - 211. Release tensRead one place; drop one digit.83minus218 - 2 = 6answer strip68 - 2 = 6; drop 6.2. Release ones2. Release ones83minus213 - 1 = 2answer strip623 - 1 = 2; drop 2.
