Add / Sub revision and extension - Term 2


For week 1 and 2 you will be reviewing your addition and subtraction strategies.

When you feel confident with your strategy, move onto the next strategy.

Follow the following method:

[1] Watch the video of the strategy --> as often as you need

[2] Take a GUIDE SHEET - read it and go through the examples

* watch the video again if you need to
* check your answers against the answer sheet to see how you are going
* go to an expert for that strategy - they can give you a hand

[3] Take a WORKSHEET

* Do this in your maths exercise book
* Write the short date
* Write the WALT
* show your working out
* Remember that ONE number or mark per box

See the EXAMPLE LAYOUT display to see the expected standard

Addition and Subtraction strategy review guidesheet


Strategy 1
54 + 18 =      52 + 20 = 72
Plus one side, minus the other side
Strategy 2
394 + 79 = 393 + 80 = 473
Or    400 + 73 = 473

Step up
Plus one side, minus the other side
Strategy 3
56 - 37 =       59 - 40 = 19
If you add to one side, you add to the other side.
If you minus one side, you minus the other side
Strategy 4
345 - 98 =  347 - 100 - 247

Or 350 - 103 = 247
If you add to one side, you add to the other side.
If you minus one side, you minus the other side
Strategy 5
             1
           347
- 218
          ------
           565
Standard written form for addition
Strategy 6


           763
- 148
          --------
           615
Standard written form for subtraction
Strategy 7
  3.6 + 2.5 = 6.1
Adding decimals
Strategy 8
  6.4 - 2.2 = 4.2
Subtracting decimals

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