https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/subtraction-within-100/v/introduction-to-regrouping-borrowing 2021-07-06T11:21:37Z Subtracting with regrouping (borrowing) Sal subtracts 25 from 83 by thinking about tens and ones. video https://cdn.kastatic.org/googleusercontent/1qheEcUH-VshquvTZL6jgf9MvPz-gpySAZNJW_HbUa4PTWJc1izfJFkahNPDTxUi5vz-4Zk8rta1lfrl3RZXtJBu Subtracting with regrouping (borrowing) Sal subtracts 25 from 83 by thinking about tens and ones. https://cdn.kastatic.org/ka-youtube-converted/egjDLFX9VHg.mp4/egjDLFX9VHg.mp4 327 Subtraction (By Untying Ten and By Counting Backward) https://www.khanacademy.org/math/cc-2nd-grade-math/cc-2nd-add-subtract-100/cc-2nd-sub-ones-tens/e/subtraction_3 2026-03-24T23:41:07.080866137Z Subtract within 100 using place value blocks Practice subtracting 2-digit numbers using place value blocks. Marcia Lee exercise