Question

A ream of paper (500 sheets) is 5.4cm thick. What is the thickness of a single sheet, correct to one significant figure?

Answer 1

Answer:

If a ream (500 sheets) of paper is 4 cm thick, how thick would 13 reams be?

Let us make this easy on ourselves. They are all the same thickness.

Now, having forgotten our 13 times tables, we see that 13 x 4 = 2 x 2 x 13. 2 x 26 = 52.

So, in children’s measurements (cm), it is 52 cm. Or 520 mm.

Step-by-step explanation:

Answer 2

Given data:

A ream of paper (500 sheets) is 5.4 cm thick

To find:

The thickness of a single sheet, correct to one significant figure

Step-by-step explanation:

In order to find the thickness of a single sheet, we divide the thickness of the ream (that is the the thickness of 500 sheets) by the number of sheets in the ream (that is 500 sheets).

Therefore the thickness of a single sheet

= 5.4 ÷ 500 cm

= 0.0108 cm

= 0.108 mm

= 0.11 mm ( two significant figures )

= 0.1 mm ( one significant figure )

Answer:

The thickness of a single sheet, correct to one significant figure is 0.108 cm or 1.1 mm (one significant figure).

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