L.O: To use mental strategies to add numbers to 100
L.O: To add whole numbers
L.O: To add and subtract whole numbers and check
L.O: To add and subtract whole numbers and decimals
What strategies do you already know?
How would you add 56 + 123
Click to watch!
Whiteboards ready...
What about this one?
Discuss...
True or False?
For addition and subtraction, it doesn't matter which way around the numbers go?
Time to Choose Your Chilli!
Time to Choose Your Chilli!
L.O: To check answers using a variety of methods e.g., rounding, estimation or inverse
True or False?
Beth wyt ti'n meddwl?
Mental Calculations and Estimation
Gemau (Click the chilli to play!)
For this chilli - you can make it easier or harder. You will need a whiteboard and a whiteboard pen. Keep ALL your answers until the end of the game.