5.  Study the following picture and answer the questions that follow:      

5.1.1 If the number of protons doubled, how many protons would there be?(Write a numbers sentence/calculation and give the correct answer. (2)

3.4 Convert the following mixed number to an improper fraction. (5 and 5/6) (1)

3.8 Convert 0,75 to a common fraction in its most simplified form. (1)

The next thing you notice is a machine with a dial.  On the dial there are the missing decimal and whole numbers.  You KNOW it must mean something, so you complete the missing decimal numbers and symbols.

 2.1  Study the attempt of the “Mad Scientist”.      Is the answer correct? Type Yes or No.  If not where did he go wrong? Please name two mistakes that he made and correct those mistakes for him.   Type all of your answers in the textbox below. Click on the button to view the calculation in a larger format. (5)

5.3.1 The “Mad Scientist” wants to work out the total of the masses of the two atoms (iron /aluminum- 5.85 + 26.9815). He does this in the following two ways. Which method is correct? Why do you say so? (2)   Method 1:   Method 2:       Click on the button to view the calculation in a larger format.      

2.3 In order to find the third number of the combination lock calculate the answer: 0,253 + 0,839  =  Type the name of the method you used and only your final answer. There is no need to show your calculations.   (2)

INSTRUCTIONS:  1. The answers you provide for this SBA task must be your own work. No copying from any source is allowed. 2. This question paper consists of 5 questions with sub-questions. 3. READ the questions carefully and only answer what is expected of you.  4. Number your answers correctly for file upload or text box questions according to the numbering system used in this question paper. If not, this may cause you to lose marks as each question number must correspond to a specific answer. 5. Where asked, clearly show ALL calculations.

  QUESTION 1    1.  The following question is a file-upload question. Answer questions 1.1 – 1.4 on a single piece of paper.  Remember to show ALL of your calculations.  You will need to take a clear SCAN or PHOTOGRAPH of your work in one of the following file formats: PDF, JPEG or PNG. Upload your scan or photograph in the space provided below this question.   ONLY handwritten answers will be accepted and marked for file upload questions. Electronic (typed documents) work will receive zero.       The “Mad Scientist” left a couple of calculations unsolved on his whiteboard.  You realize that the answers are necessary for your escape.  You feverously start to do the calculations on a piece of paper.    1.1 Calculate the value: (3/8) of  96 (2) 1.2  Calculate the value of