Subtracting multi-digit numbers

Subtracting multi-digit numbers

In this lesson, we will learn:

  • How to subtract examples with regrouping: from two 2-digit numbers up to two 6-digit numbers
  • How to subtract three numbers
  • How to regroup when there are zeroes

Notes:

  • If you need to borrow when subtracting:
    • 1 ten can be regrouped ("exchanged") for 10 ones
    • 1 hundred can be regrouped for 10 tens
    • 1 thousand can be regrouped for 10 hundreds
Example 1: Subtracting Multi-Digit Numbers

Example 2: Subtracting Multi-Digit Numbers

Lessons

  • Introduction
    Introduction to Subtracting Multi-Digit Numbers:
    a)
    Introduction to subtracting multi-digit numbers

    b)
    Regrouping technique: borrowing when there are zeroes


  • 1.
    Subtracting 2-digit numbers with regrouping
    Subtract:
    a)
    71 - 9

    b)
    50 - 13

    c)
    65 - 36

    d)
    94 - 48


  • 2.
    Subtracting 3-digit numbers with regrouping
    Subtract:
    a)
    468 - 281

    b)
    812 - 223

    c)
    950 - 671


  • 3.
    Subtracting from 100 or 1000
    Subtract:
    a)
    100 - 68

    b)
    100 - 49

    c)
    1000 - 712

    d)
    1000 - 543


  • 4.
    Subtracting 4-, 5- and 6- digit numbers with regrouping
    Subtract:
    a)
    5431 - 251

    b)
    76820 - 34951

    c)
    619687 - 418939


  • 5.
    Subtracting three numbers
    Subtract:
    a)
    695 - 203 - 318

    b)
    100 - 37 - 42


  • 6.
    Subtracting multi-digit numbers with regrouping: word problem
    Billy went to the electronics store with $2502. He bought a laptop for $1599. How much money does he have left?