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Calculation involving addition, subtraction, multiplication and

By Alice Gonzales,2014-06-28 20:55
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Calculation involving addition, subtraction, multiplication and ...

Core Calculating and Communicating in Civil Construction - Indicator Tool

    Calculating and Communicating in

    Civil Construction

What this exercise is about.

This is not a test and it is not counted towards your overall results. It is

    designed to help you and your trainers identify any calculating or

    communicating skills that you can already do.

You may find that you have never needed to know some of these skills before,

    or that you haven’t used them for a while and have forgotten them.

This is your chance to let your trainers know what skills you are already

    confident with, and what you may want to brush up on before you begin your

    training. Knowing these skills will give you a head start in your course.

The topics and questions show the type of core calculations and

    communication skills used in Civil Construction work. Trades people and

    trainers from your industry have helped develop this tool, so the questions

    asked will be very relevant to what you need to be successful in your job and

    in your training.

This exercise should take about thirty minutes. Your trainer will use the

    information from this tool to help design your training program.

If there are any questions you can not complete, just leave and move onto

    the next one. The last question of the exercise asks you if you would like any

    revision in any areas. You can write any skills that you would like to go over

    and revise here.

Your name: __________________________

Construction Skills Queensland Integrated LLN and Learning Support Strategy

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Core Calculating and Communicating in Civil Construction - Indicator Tool

Communication

    Self Assessment for Communication

     Tick your most correct response to

    True False Unsure these statements.

    1. I speak English well.

    2. I understand English well.

3. I can understand and follow

    instructions well.

4. I can find information when I need

    to.

5. I read often.

6. My handwriting is easy for others to

    read.

    7. My spelling is good.

8. I can use the computer for emails or

    for looking for information on the

    internet.

Please complete the communication exercises on the following pages.

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Core Calculating and Communicating in Civil Construction - Indicator Tool

Question 1 Looking for key information

Below is a section taken from the contents page of the Workplace Health and

    Safety Regulation, 1997. Use it to answer the questions.

a. What part gives you information on injuries, illnesses and dangerous

    events in the workplace?

     _______________

b. What page would you go to for information on the refund of fees?

     _______________

c. What page/s tells you about writing about an accident in the workplace?

     _______________

Part 6 Notifiable building and construction work

    Notification of building and construction work…………………………. 61

    Exemption from payment of fees.……………………………………….. 62

    Recovering unpaid fees…………………………………………………... 63

    Refund of fees……………………………………………………………. 64

    Start and finish of building and construction work……………………… 64

Part 7 Injuries, illnesses and dangerous events

    Notifying of particular workplace incidents…………………………….. 64

    Recording of particular workplace incidents …………………………… 66

    Scene not to be interfered with………………………………………….. 68

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Core Calculating and Communicating in Civil Construction - Indicator Tool

Question 2 Understanding workplace text

Refer to the information below to answer these questions. The information is

    taken from a Material Safety Data Sheet for a given product.

Tick the most correct answer.

    a. If you inhale this product, you should…. ? Move to fresh air

    ? Rinse mouth and lips with clean water

    ? Flush with flowing water

    ? Induce vomiting

b. The phone number for the poisons information centre is…..

    ? 13 26 11

    ? 13 11 26

    ? 13 21 61

    ? 13 6121

First aid measures

Eye: Flush with flowing water while holding eyelids apart. Do

    not attempt to remove embedded particles. If symptoms

    such as redness, irritation or pain persist, seek medical

    attention.

Inhaled: If over exposure occurs, move to fresh air. If irritation

    persists, seek medical attention.

Skin: Remove contaminated clothing and flush affected areas

    with water. Use a mild soap if available. Shower if

    necessary. Seek medical attention if irritation develops.

    Launder clothing before re-use.

Swallowing: If swallowed, do not induce vomiting. Rinse mouth and lips

    with clean water. Contact a Poisons information centre on

    13 1126 (Australia wide).

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Core Calculating and Communicating in Civil Construction - Indicator Tool

Question 3 Understanding tables

The table below is taken from a Product Data Sheet. Tick the most correct

    answer.

a. The final setting time according to the Australian Standards (AS 3972) is

    10 hours maximum.

    ? True

    ? False

b. It takes 7 days for this product to reach full strength.

    ? True

    ? False

c. The fineness of the product is 330 -370 a square metre per kilogram.

    ? True

    ? False

    Property GP Cement AS 3972

    Setting time Typical : Requirement: Initial 1.5 3 hours 45 mins max Final 2.5 4 hours 10 hrs max

    Soundness: 1.0mm 5.0mm max

    2Fineness: m/kg330 370

    Comp. Strength:

     3 day 25 -33 MPa

     7 day 36 -45 MPa 35 MPa min

     28 day 54 -64 MPa 45 MPa min

    Mineral Addition 5% 5% max

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Core Calculating and Communicating in Civil Construction - Indicator Tool

Question 4 Filling in workplace documents

Complete the Maintenance Report below using the following information:

? When you checked the Ride on Roller this morning, there was no power

    to the motor and the ignition did not work.

? You cleaned the battery terminals and checked the wiring to the starter

    motor. The Roller then started.

    Maintenance Report

    Date of Identify problem Operation and maintenance

    Inspection activities performed

Completed by:

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Core Calculating and Communicating in Civil Construction - Indicator Tool

Calculations

    Self Assessment for Calculating

     Tick your most correct response to

    True False Unsure these statements.

1. I don’t need a calculator to add and

    subtract.

2. I don’t need a calculator to multiply

    or divide.

    3. I can measure accurately.

4. I’ve used formulae before and can

    usually work them out.

    5. I find calculating easy.

6. I am good at solving mathematical

    problems.

The next page has formulae, information or worked examples to help you

    answer the rest of the calculations questions on pages 9 - 14. You can refer

    to this information if you need to.

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    Core Calculating and Communicating in Civil Construction - Indicator Tool

    Use this page as a reference if you need to for the calculating

    questions.

    Skill Formula, worked example or hint

3Indices means 2 times itself 3 times, or 2 x 2 x 2 2

Brackets first, then in the order we read them, division BODMAS

    and multiplication, then addition and subtraction.

    To change a fraction to a percentage, all we do is Percentages

    multiply the fraction numerator (top number) by 100,

    divide by the denominator (bottom number) and put a %

    sign after it.

To find a percentage of a number, find one percent by

    moving the decimal point two places left, and then

    multiply by the percentage number you need. There are 1 000 millimetres in a metre. Metric measurement

    1 000 m = 1 km

    There are 1 000 grams in a kilogram Weight measurement

    There are 1 000 kg in a tonne.

    Round up for numbers that are 5 or over, Rounding off

    round down for numbers that are less than 5. 6 : 18 is the same as 1 : 3 Ratio

The perimeter of a shape is the total length of all of its Perimeter

    sides.

     or C?2???rC???d??3.14Circumference

To calculate the area of a rectangular shape we Area of a rectangle

    multiply the length by the width.

     A?L?W

    1Area of a triangle Area??base?height 2

     A?B?HArea of a

    B is the base length, H is the perpendicular height parallelogram

    Volume = length x width x depth Volume of a prism or

    or rectangular shape

    Volume = Area of cross section x length Volume = Area of cross section x height Volume of a cylinder

    or 2 V???r?h??3.14Volume of a cone = ? x volume of a cylinder Volume of a cone

    1Area of a trapezium ?? A?a?bh2

    Construction Skills Queensland Integrated LLN and Learning Support Strategy

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Core Calculating and Communicating in Civil Construction - Indicator Tool

Question 1 Addition, subtraction, multiplication and

    division

Complete these calculations.

a. _________ 56?78?

b. _________ 415?52?

c. _________ 54?12?

d. _________ 96?12?

Question 2 Indices

    2a. _________ 6?

    3b. _________ 8?

Question 3 Order of operations

    ??3?10?5?a. _________

b. _________ 12?4?2?2?

Question 4 Metric dimensions

    a. Write 2.5 m in mm. __________

    b. Change 1 200 m into km. __________

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Core Calculating and Communicating in Civil Construction - Indicator Tool

Question 5 Weight Conversions

a. Change 2650 g into kg. ______________

b. 4 tonnes is the same as __________ kg

Question 6 Rounding off measurement values

Round off each measurement as stated:

a. Round off 52.6 m to the nearest metre. ______________

b. Round off 37.286 mm to one decimal place. ______________

Question 7 Ratio

a. To make slurry, you need 10 litres of water for every 20 kilograms of

    cement. What is the amount of water needed to be mixed with 40 kg of

    cement?

     ___________

b. A plan has a scale of 1 mm : 1 m.

    On this plan, a car park is 80 mm long. What is its actual length?

     ___________

c. The fuel mix ratio of a two stroke engine of fuel to oil is 25 : 1.

     Write the ratio if you have 3 parts of oil.

     _____________

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