Friday, July 01, 2011

Addition and Subtraction: Strategies (EA)


EA

What is the next tidy number?  How many will need to be added?



Use the number line to add numbers in parts.



Use this tool to show jumps on a number line.



Jump through ten and then to your space rocket!



Destroy the kings castle with your giant catapult!



Practise bridging addition problems through 10, 20 and 50.



Move 10, Adjust by 1

Practise adding and subtracting 9.  First move 10 then adjust by one.




Practise comparisons of sets with cuisenaire rods.








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