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Monday, May 4, 2020

Tidy numbers

Today for Math we did Tidy numbers again. I have done my working out on a google drawing. Here is my work.

With Tidy numbers there is two way syou can do this. Option one If I had 98+67 I would plus two to the 98 so it becomes a hundred so that means I have to minus two to the 67 which is know 65. So know the question is 100+65=165.

Option two Plus three onto the 67 so its know 70 so then you have to minus two of the 98 so it's now 96. So know the question is 70+67=137.
Here is a Minus one. 93-88 So I will plus two to the 88 which is know 90. But because this is a minus you have to plus the same number as you did with the 88 so you plus two to the 93 which is now 95. The question is know 90+95=185.

With decimals it is the same.

What do these equal?
97+85=
6.5-9.2=
108-67=
65.5+9.5=
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1 comment:

  1. AnonymousMay 5, 2020 at 3:44 PM

    Hi Benjamin
    Good google board on tidy numbers. I just note that some of the answers aren't quite correct. With the 20.8 + 62.6 if you had + 0.2 to the 20.8 it will make it 21 not 30. Do you want to try doing it again if you have time? Well done though on following on from your workshop
    Katrina

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