Initial Diagnostic Audit - Unit C1: Units of Measurement

Do NOT use a calculator for any questions in the audit unless specifically told otherwise
Section C1.1 - Units and Measuring
1. How many cm are there in 4.95 m? cm
2. How many m are there in 79.6 km? m
3. How many g are there in 3.70 kg? g
4. How many ml are there in 3.5 litres ml
5. A jug contains 1 litre of water. How many full glasses of capacity 230 ml, could be filled from a full jug?
Section C1.2 - Upper and Lower Bounds
6. A line of length l cm is measured as 16 cm to the nearest cm.
Which of these statements is ALWAYS true?

15.5 < l < 16.5
15.5 < l ≤ 16.5
15.5 ≤ l ≤ 16.5
15.5 ≤ l < 16.5

7. A dog is weighed and its mass, m is 30 kg to the nearest 2 kg.
Complete the inequalities below for the possible mass of the dog.

Click on the inequality symbol that you want to select it. To change the symbol, click on it again and then reselect as before.

(a) kg Click to select an appropriate inequality m

(b) m Click to select an appropriate inequality kg

8. A cricket ball has mass 156.5 g to the nearest 0.5 g.
Complete the inequalities below for the possible mass, m, of the ball.

(a) g Click to select an appropriate inequality m

(b) m Click to select an appropriate inequality g

Section C1.3 - Estimating Areas

For the questions below,     represents 1 cm2
9. What is the area of this shape?

cm2

10. What is the area of the shaded part of this shape?

cm2

11. What is the area of the shaded triangle?

cm2

12. What is the area of the shaded convex shape?

cm2

13. Estimate the area of the shaded shape.

cm2

Section C1.4 - Conversion of Units
14. Sarah's height was measured as 5 feet 4 inches.

(a) What is her height in inches?

(b) What is her height in cm to the nearest cm?

(c) What is her height in metres to the nearest 0.1 metre?

15. You travel 75 miles between Exeter and Bristol on the M5.
What is the approximate distance in km? km
16. Russell weighs 12 stone 4 pounds.
What is his weight in kg? kg

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Produced by Russell Geach for CIMT - January 2013