We have been working on solving missing number calculations in our Maths Meetings. Have a go at these games to practise adding and subtracting, thinking about the inverse relationship to check. Remember, when you are subtracting the largest number comes first!
Easier - number bonds (try to 10 and 100)
Remember to use a numberline to help you decide if you need to add tens or ones.
http://www.amblesideprimary.com/ambleweb/mentalmaths/numberbond.html
Harder
http://resources.oswego.org/games/SpeedGrid/Subtraction/urikasub1res.html

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