Tuesday, June 19, 2012

Subtraction Strategies

Did you know that there are many different ways to solve subtraction problems?

In our last post we talked about solving subtraction problems using the vertical method with and without regrouping. Sometimes when we need to solve subtraction problems in everyday life, like when we are shopping, we do not always have a pencil and piece of paper handy.

In the last few weeks we have been learning a variety of different strategies that we can use to solve subtraction problems in our heads.

Here are the strategies we have learnt:
  

 

 

 


 




Have you used these strategies before?

What strategy do you think you use the most and why?

How has learning these strategies helped you to understand subtraction?










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8 comments:

  1. Mrs Verona GridleyJune 20, 2012 at 12:14 AM

    They are some great strategies for solving subtraction problems. I will definitely share these with my class tomorrow. Thankyou for sharing your great ideas.
    SeniorG
    @kidsjig

    ReplyDelete
    Replies
    1. Miss SpinkJune 20, 2012 at 2:13 AM

      Hi Mrs Gridley,

      Thanks for your comment. We hope your class get a lot out of it!

      Miss Spink

      Delete
  2. AnonymousJune 20, 2012 at 2:10 AM

    Hi Miss Spink,

    I see you've put up some subtraction strategies, their very useful to William and others. Now because of you, I know many great things!!
    Hope I win the challenge!!

    Sincerely,

    Kyla Aitken Creek Primary School = ]

    ReplyDelete
    Replies
    1. AnonymousJune 21, 2012 at 4:23 PM

      Dear Kyla,

      Do you play some subtraction when you do harder sums?
      Yes or no? Do you love doing speed test when the time starts at 1 seconds? When the time is finsh you stop at 5 min you put your pencils down.

      From Adison

      Delete
  3. Miss SpinkJune 20, 2012 at 2:12 AM

    Hi Kyla,

    I did upload the strategies we have been working on. :-)

    But you forgot to answer the questions from the post!

    Just in case you missed them, they were-

    Have you used these strategies before?

    What strategy do you think you use the most and why?

    How has learning these strategies helped you to understand subtraction?

    Looking forward to your response,

    Miss Spink

    ReplyDelete
  4. AnonymousJune 24, 2012 at 4:26 PM

    Hello Miss Spink,
    Up until now i had never used those stratergies or even heard of them. Now that i do them i have found it way more easier to solve subtraction and it has given me lots of choices that Iget to pick from.I think i use the compensation stratergy the most because it is not easy but it is not hard. It is great and it gets a little challenging. Learning these stratergies has helped me to use subtraction by letting me have choices to chose from so i dont get bord of doing subtraction.Now from been doing all of these stratergies, i know many differant things.

    Bye for now,
    From Makeelly

    ReplyDelete
  5. AnonymousJune 25, 2012 at 4:53 PM

    Hi Miss Spink
    I didnt like maths but now that we leart all these stategies I love It.I have been using all these strategies and there really fun.By using all these strategies I know now several strategies and I understand subtraction better than before.

    From Ayla ACPS

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  6. AnonymousJuly 23, 2012 at 4:45 PM

    Hi Miss Spink,

    The strategie that I use most is jump strategie, because I think it's the easiest to me. Yes I have use jump strategie before, with all these strategies makes it easy and funner to do maths.

    Regards Ramy.

    ReplyDelete

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