1 / 9

43 – 12 =

Remember how we can use partitioning to help us to subtract?. 43 – 12 =. 43 – 12 =. First draw the biggest number. Now cross out the second number to subtract. 31. Count what is left. 10. 20. 30. 43 – 12 = 31. 43 – 15 =. First draw the biggest number.

zia-wells
Download Presentation

43 – 12 =

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. Remember how we can use partitioning to help us to subtract? 43 – 12 =

  2. 43 – 12 = First draw the biggest number. Now cross out the second number to subtract. 31 Count what is left. 10 20 30 43 – 12 = 31

  3. 43 – 15 = First draw the biggest number. Can we cross out the second number to subtract? We need to cross out 5 units and we only have 3!

  4. 43 – 15 = We need to cross out 5 units and we only have 3 but how many units are in one ten?

  5. 43 – 15 = Lets break up one ten to make ten units.

  6. 43 – 15 = Now can we cross out 1 ten and 5 units?

  7. 43 – 15 = 25 21 24 26 22 27 23 28 10 20 Now count what is left.

  8. 43 – 15 = 25 21 24 26 22 27 23 28 10 20 43 – 15 = 28

  9. Try some on your own. 34 – 17 =

More Related