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Positive and negative numbers (signed)

An introduction to positive and negative numbers. Cartoon-style numbers initially form a line from 0 to 9. The negative numbers 1 to -9 then join the line in the correct sequence. The clip continues with 3 added to -7, and then added to -4, and so on, to show how the result of the addition becomes more positive each time.

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Duration:

2 minutes