Add and Subtract Mass

Adding and subtracting mass is the same as simply adding and subtracting normal numbers, but you must remember to put the measurement (kg, g) after the numbers.

The mass of the grapes is 100g.

The mass of the bread rolls is 300g.

I know that 100 + 300 = 400.

The total mass is 400g.

Visit the BBC Bitesize page to see the videos and activities for adding and subtracting mass.

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