Sin Kei Chan
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Approximation and Error

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Sin Kei Chan
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S2A Chapter 1 Extra Exercise

Question 1 of 8

1

Fill the blank space to complete the text.

Round off 183.577 to 3 significant figures.

Explanation

Question 2 of 8

1

Fill the blank space to complete the text.

Round off 29.05 to 3 significant figures.

Explanation

Question 3 of 8

1

Fill the blank space to complete the text.

Round off 17 to 3 significant figures.

Explanation

Question 4 of 8

1

Fill the blank space to complete the text.

Round off 299700 to 3 significant figures.

Explanation

Question 5 of 8

5

Fill the blank spaces to complete the text.

How many significant figures are there if the following numbers are rounded off to the nearest ten?
197

277453.69

10.7

995

10000

Explanation

Question 6 of 8

3

Fill the blank spaces to complete the text.

Estimate the value of the following expressions by rounding off each number to 2 significant figures.
137 + 255 x 299.7

25.7 x 0.0197 + 17.49

291 + 374 - 299

Explanation

Question 7 of 8

4

Fill the blank spaces to complete the text.

Find the absolute error when the following data are rounded off to 3 significant figures.
13995.7

2997.33 cm
cm
0.07745 km
km
1.777777 L
L

Explanation

Question 8 of 8

1

Express the actual value of a data in terms of "absolute error" and "relative error".
actual value = /

Drag and drop to complete the text.

    absolute error
    relative error
    maximum error
    percentage error

Explanation

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