Large and Small Units

Large and Small Units

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​ ​ ​

A milligram is a very small measure of ​

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It is represented by the letters mg. 1 milligram = 0. 001 ​

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which is the same as 1 mg = 1 × 10^-3 ​

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You can also say that there are ​

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milligrams in a gram or that 1 milligram is ​

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of a gram.

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mass

grams

g

one thousand

one thousandth

volume

kg

mg

one hundred

one hundredth

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A nanometre is a very small measure of ​

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. It is represented by the letters ​

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. 1 nanometre = =0.000000001 ​

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which is the same as 1 nm = 1 × 10^-9 m. You can also say that there are ​

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nanometres in a metre or 1 nanometre is ​

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of a metre.

Reorder

Sort these lengths in order of size, starting with the smallest.

• 8 micrometres

• 8 millimetres

• 8 centimetres

• 8 metres

• 8 kilometres

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Reorder

Sort these lengths by size, starting with the smallest.

• 8 μm

• 8 mm

• 8 cm

• 8 m

• 8 km

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Labelling

The table shows the approximate distances from Earth to some other planets

Drag labels to their correct position on the image

628.7

1.28

2.724

4.35

Match

Match each of these cards!

• Grain of sugar 0.0006 g

• Poppy seed 0.0003 g

• Dust particle 0.0000006 g

• Grain of rice 0.03 g

• Grain of salt 0.00006

600 μg

300 μg

600 ng

30 mg

60 μg

• 600 μg

• 300 μg

• 600 ng

• 30 mg

• 60 μg

Reorder

Sort the items in order of memory size, from the smallest to the largest.

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