Further Links Contact Us Search Help

Syllabus | Exams | Websites | Resources | Glossary | Careers

Metal and Engineering

Home > Metals and Engineering > Compulsory Units > MEM12024A: Perform computations > Perform computations

Test your knowledge - Answers

Correct answers are in red.

1. 1. 73 + 48 =
   
   
   1. 111
   2. 121
   3. 221
   4. 211
      
      
2. 4132 + 6189 =
   
   
   1. 10 32
   2. 11 311
   3. 10 221
   4. 11 121
      
      
3. 6147 - 5827 =
   
   
   1. 1320
   2. 220
   3. 320
   4. 1220
      
      
4. 33 x 74 =
   
   
   1. 2442
   2. 2342
   3. 2412
   4. 2312
      
      
5. 6143 x 327 =
   
   
   1. 2 008 761
   2. 2 118 761
   3. 2 019 761
   4. 2 019 761
      
      
6. 76 ÷ 3 =
   
   
   1. 24 1/3
   2. 24.3
   3. 25.4
   4. 25 1/3
      
      
7. 693 ÷ 7 =
   
   
   1. 99
   2. 98 6/7
   3. 97.9
   4. 97.7
      
      
8. 1 1/2 + 2 1/3 =
   
   
   1. 3 2/5
   2. 3 5/6
   3. 4 1/6
   4. 3 1/6
      
      
9. 4 1/6 x 2 2/5 =
   
   
   1. 10
   2. 10 1/6
   3. 8 1/15
   4. 8 2/30
      
      
10. 10 6.42 x 1.7 =
    
    
    1. 10.914
    2. 109.14
    3. 1.0914
    4. 110.14
       
       
11. Specifications for a component states that its length is to be 100 mm + 0.5 mm. Five components are measured after production for quality control purposes. The results are:
    
    Component 1      100.2 mm
    Component 2      99.2 mm
    Component 3      100.7 mm
    Component 4      99.7 mm
    Component 5      100.0 mm
    
    Which components would pass quality control?
    
    
    1. 1, 2, 3
    2. 2, 3, 4
    3. 3, 4, 5
    4. 4, 5, 1
       
       
12. Bill needs to make a “rough” estimate of the following calculation.
    
    69.432 x 1.137²
    128.43
    
    Which one of the following calculations should he use to work out his estimate?
    
    
    1. 69.43 x 1.14²
       128.43
       
       
    2. 70 x 1.1²
       128.4
       
       
    3. 70 x 1²
       100
       
       
    4. 69 x 1.1²
       130

Back to Perform computations