This task is about calculations with negative numbers.
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Tide Gauge (measurement in millimetres) |
The tide gauge shows the water level is currently +5 mm.
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What will the water level be if it falls from this level by:
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i)
ii) iii) |
5 mm?
10 mm? 20 mm? |
New Water Level
__________
__________ __________ |
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b)
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What is the difference in water level from:
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i)
ii) iii) |
–5 mm to 5 mm?
–5 mm to 10 mm? –15 mm to 15 mm? |
__________
__________ __________ |
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c)
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How many millimetres from 5 mm below the zero mark to:
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i) ii) |
10 mm below the zero mark? 40 mm above the zero mark? |
__________ __________ |
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