Subtraction Level 6: 2d - round number. subtract the round chunk. 1. Release tens86 - 401. Release tensRead one place; drop one digit.86minus408 - 4 = 4answer strip48 - 4 = 4; drop 4.2. Release ones2. Release ones86minus406 - 0 = 6answer strip466 - 0 = 6; drop 6.
