UNIVERSITY OF WEST LONDON
School of Computing and Engineering
Introduction to Computing Mathematics
Resit Assessment
Submission Date: 31st July 2021
Please answer all questions on this paper and upload an electronic completed copy of your work on Blackboard.
ANSWER ALL 20 QUESTIONS FROM SECTION A
ANSWER ALL 4 QUESTIONS FROM SECTION B
Working for all your answers in section B must be clearly shown in the spaces provided.
MARKING SCHEME: SECTION A: 3 MARKS FOR EACH QUESTION
20 Questions
SECTION B: 10 MARKS FOR EACH QUESTION
4 Questions
MATERIALS ALLOWED: SCIENTIFIC CALCULATOR
OPEN/CLOSED BOOK: OPEN BOOK
SECTION A. Answer all multiple choice questions from this section.
Tick or circle or highlight the correct answer.
139325is equal to: a. 26.67 b. 90 c. 6 | |
2976.895 in standard form is: a. 0.2976895 x 10-4 b. 2976895 x 103 c. 2.976895 x 103 | |
458.95 to 3 Significant Figures is: a. 460 b. 459 c. 458 | |
6750 to nearest 100 is: a. 6700 b. 6800 c. 6750 | |
1612482is equal to: a. 1 b. -28 c. 20 | |
2.56 ÷ 104 is: a. 25600 b. 0.2560 c. 0.000256 | |
÷ is: a. 4/3 b. 3/4 c. 25/48 | |
£300 split in the ratio 1:2:3 will give: a. £100, £200 and £300 b. £50, £100 and £150 c. £60, £120 and £150 | |
48% of £250 is: a. £120 b. £112 c. £140 | |
What is 40% of 2 hours? a. 80mins b. 40mins c. 48mins |
30% of 1MB is: a. 3KB b. 30KB c. 300KB | |
3/8 as a percentage is: a. 0.375% b. 3.75% c. 37.5% | |
5.75 as a percentage is: a. 5.75% b. 575% c. 57.5% | |
68 in index form is: a. 22 x 17 b. 22 x 1 x 7 c. 2 x 31 x 41 | |
(2x2)2 ÷ (4x2)2is: a. ¼ x b. ½ x0k c. ¼ | |
If 15 + 4K = 2K + 3, what is K? a. -6 b. -9 c. -3 | |
A person deposits of £10,000 with a bank at a rate of 2% compounded annually. What is the value of the deposit at the end of 3 years? (answer given to the nearest hundred) a. £10,230 b. £10,612 c. £10,600 | |
The ratio of red balls to blue balls in a bag is 5:7. If there are 21 blue balls in the bag, how many red balls are there in the bag? a. 15 b. 12 c. 10 | |
An electronics goods store is offering a 10% discount on a gadget that normally cost £110.99. How much will the gadget cost with the discount, and including tax @20%? a. £ 99.89 b. £119.87 c. £114.86 | |
(1000 x 103) ÷ (√100 x 103) a. 100 b. 1/100 c. 10-2 |
SECTION B. Answer ALL questions from this section.
Please show all working clearly in the spaces provided.
Round 239.985 to: 2 Decimal Places 239.99 1 Decimal Place 240.0 3 Significant Figures 240 2 Significant Figures 23 1 Significant Figure 2 (10 Marks) | |
John leaves 5/8 of his money to his wife and the remainder split in the ratio of 2:3 between his daughter and his son. If he leaves behind £12000, how much do the children receive? Sum of ratio = 2+3=5 Share of daughter= 2/5 X £12000 = £4800 Share of sun = 3/5 X £12000 = £ 7200 (10 Marks) | |
Solve the following equations: 4( X 2) 3( X 4) 9 4x+(x+2)+3(x+4)+9 =4x+8+3(x+4)+9 =4x+8+3(x+4)+9 =4x+8+3x+12+9 Add the numbers : =4x+8+3x+12+9 =4x+29+3x Combine like terms: =4x+29+3x =7x+29 2(3X-1) – 10 = 6 =2(3x−1)−10=6 =6x−2−10=6 Subtract the number : =6x−2−10=6 =6x−12=6 Add 12 to both side of equation : =6x−12=6 =6x−12+12=6+12 =6x=18 Divide both sides of the equation by the same term; =6x=18 =6x/6=18/6 X=3 (10 Marks) | |
Apply the rules of Indices and simplify the following: a5 x b-3 x a3 x b5 x a-2 =a5+3+(-2) X b-3+5 =a6Xb2 9a5 x 6a-2 x (3a)-2 = 18a (10 Marks) |
Section A = 60 Marks
Section B = 40 Marks
Total Marks = 100
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