MEP Jamaica: STRAND E UNIT 11 Units of Measurement: CSEC Revision Test

CIMT and e-Learning Jamaica 1

UNIT 11 Units of Measurement CSEC Revision Test

1. Copy and complete the following: Lengths in

m cm mm

? ? 420

12.3 ? ?

? 256 ? (6 marks)

2. Read off the values shown by the arrow on each of the following scales:

(a) 50 100

(b) 0 1

(c) 15 20 (3 marks)

3. By counting the number of equivalent squares, find the area of each of the following shadedshapes (the grid lines are each 1 cm apart):(a) (b)

(4 marks)

MEP Jamaica: STRAND E UNIT 11 Units of Measurement: CSEC Revision Test

CIMT and e-Learning Jamaica 2

UNIT 11 Units of Measurement CSEC Revision Test

4. The power in an electrical component is given by the formula

PV

R=

2

where P is the power in watts, V is the voltage in volts, and R is the resistance in ohms.V and R are measured experimentally and the formula is used to estimate the power.

(a) V is measured as 2.4 volts, correct to 1 decimal place.Calculate the largest and smallest possible values of V 2 . (3 marks)

(b) R is measured as 1.25 ohms, correct to 2 decimal places.Use the formula to calculate the largest possible value of P.Give your answer correct to 2 decimal places. (3 marks)

5. On the way to Port Antonio, a truck driver takes a short cut.He comes to a low bridge with maximum headroom 4 metres.

1 metre = 39 inches 12 inches = 1 foot

The driver knows his truck is 13 feet 1 inch high.Can the truck go under the bridge?Show all your working. (3 marks)

TOTAL MARKS: 22

MaximumHeadroom

4 m

denotes that the topic is not on the current CXC/CSEC Mathematics syllabus and therefore notexamined, but is of relevance to the content of the Unit.

MEP Jamaica: STRAND E UNIT 11 Units of Measurement: CSEC Revision Test

CIMT and e-Learning Jamaica 3

1. 0.42m, 42 cm B1 B11230 cm, 12 300 mm B1 B12.56 m, 2560 mm B1 B1 (6 marks)

2. (a) 80 (b) 0.3 (c) 18.5B1 B1 B1 (3 marks)

3. (a) 11 cm2 (b) 12 cm2 B2 B2 (4 marks)

4. (a) 2 45 2.( ) = 6.0025 , 2 35 2.( ) = 5.5225 M1 A1 A1

(b) 2 451 245

2..

( ) 4.82 M1 A1 A1 (6 marks)

* 5. 4 metres 4 39 = 156 inches M1 A1

= 13 feet < 13 feet 1 inch A1

Hence, the truck cannot go under the bridge. (3 marks)

(TOTAL MARKS: 22)

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UNIT 11 Units of Measurement CSEC Revision TestANSWERS