Addition and subtraction on a number line links between the model and appropriate ‘vertical’ method Janine Blinko.

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Presentation transcript:

Addition and subtraction on a number line links between the model and appropriate ‘vertical’ method Janine Blinko

In which case they need to be fluent in subtracting multiples of 100 from any number…… Equivalent written recording-formal version

and fluent in subtracting multiples of 10 from any number including crossing the hundreds boundaries…… Equivalent written recording-formal version

Equivalent written recording-formal version

It is My cake will be ready at How long do I have to wait before it is ready? +5 mins hour 1hour 55 minutes +30 mins mins

Equivalent written recording- formal version

Equivalent written recording-formal version

Equivalent written recording- formal version

In which case they need to be fluent in adding multiples of 100 to any number…… Equivalent written recording-formal version

and fluent in adding multiples of 10 to any number including crossing the hundreds boundaries…… Equivalent written recording-formal version

Equivalent written recording-formal version (+200) 418 (+70) 421 (+3)