Doubling and Halving to 20 [PowerPoint TBM203]

35 slides. Doubling and halving numbers to 20. Mental strategy used with ten frames to encourage subitizing of answers. Counters animate. Interactive PowerPoint Think Bubble Math 203

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Australian Curriculum Alignment:

Yr 2


Solve simple addition and subtraction problems using a range of efficient mental and written strategies

Yr 2


Recognise and interpret common uses of halves, quarters and eighths of shapes and collections

Yr 3


Investigate the conditions required for a number to be odd or even and identify odd and even numbers

Yr 3


Recall addition facts for single-digit numbers and related subtraction facts to develop increasingly efficient mental strategies for computation

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