1 / 5

Adding and Subtracting

Adding and Subtracting. Review of Adding. Line up each column with the same value in the number below: 457 8 (8 is in the ones column) +654 3 (3 is in the one column). Adding Whole Numbers. Once the columns are lined up, add the numbers

tavon
Download Presentation

Adding and Subtracting

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Adding and Subtracting

  2. Review of Adding • Line up each column with the same value in the number below: 4578 (8 is in the ones column) +6543 (3 is in the one column)

  3. Adding Whole Numbers • Once the columns are lined up, add the numbers • Remember to carry to the next column if the sum is more than 9  The extra numbers at the top are carried over 1 1 4 578 +6 343 • 8 + 3 =11 so the number in the ones column goes below, the number in the tens column goes above the next column 9 10 2 1 • 7+4+1=12 so the 2 goes on the bottom and the one goes above • 5+3+1=9 so the 9 goes below and 4+6=10 • Since there is no more to add, both numbers go below

  4. Review of Subtracting • Line up each column with the same value in the number below: 6 372 -3 548  2 is in the ones column  8 is in the ones column

  5. Subtracting Whole Numbers • Once the numbers are lined up, subtract the numbers • Remember to borrow from the next column if the bottom number is too small (the digit being borrowed gets smaller by one • You can’t subtract 8 from 2 so we borrow a ten to make it 12-8 • The 7 in the tens becomes 5 1 1 6 6 372 -3 548 \ \ • 6-4=2 • You can’t subtract 5 from 3 so we borrow a ten to make it 13-5 • The 6 in the thousands becomes a 5 2 8 2 4 • 13-5=8 • 5-3=2

More Related