Calculus context problems

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average

Calculate the following ............

You've received for your tests a 4.2, 5.4 and 6.3. What is your average mark?

1. 5.1
2. 5.2
3. 5.3
4. 5.4

Calculating an average

1	1	1	3
Test 1	Test 2	Test 3	Exam	final mark
5	5	2	6	?

- The tests count once and the exam counts three times.

- What is your final mark?

What is your final mark?

Calculating an average

1	1	1	3
Test 1	Test 2	Test 3	Exam	final mark
5	5	2	6	?

- The average of the three tests counts once and the exam counts once .

- What is your final mark?

	1		1
Test 1	Test 2	Test 3	Exam	final mark
5	5	2	6	?

What is your final mark?

On 1 January Janine’s parents deposit €800 into her account. 2% interest is paid into her bank account at the end of the year. What is her new bank balance?

1. €16
2. €816
3. €810
4. €832

Calculating a 2% increase can be done by multiplying an amount by 1.02

TRUE

FALSE

= 1.02 x 1.02 x 1.02

1.02​3​​

TRUE

FALSE

= 102% x 102% x 102%

1.02​3​​

TRUE

FALSE

An amount increases by 4% per year for the next four years. Which calculation is INCORRECT.

1. 1.04x4
2. 104% x 104% x 104% x 104%
3. 1.04​4​​
4. 1.04 x 1.04 x 1.04 x 1.04

On 1 January Janine’s parents deposit €4000 into her account. 1% interest will paid into her bank account at the end of the next four years. What is her new bank balance in four years? (there are no withdrawals)

Calculating an average

1	1	1	3
Test 1	Test 2	Test 3	Exam	final mark
5	5	2	6	?

- The average of the three tests count once and the exam counts once .

- What is your mark for test 1 

	1		1
Test 1	Test 2	Test 3	Exam	final mark
	5	4	6	6

What is your mark
for test 1?

Calculating an average

1	1	1	3
Test 1	Test 2	Test 3	Exam	final mark
5	5	2	6	?

- The three tests count once and the exam counts three times .

- What is your mark for the exam........

1	1	1	3
Test 1	Test 2	Test 3	Exam	final mark
4.1	5.4	6.4		5.5

What is your mark for the exam.......

What do you have to pay when you buy both articles? Auction costs and delivery costs included.

Delivery costs both articles.......

Article	Cost	auction cost
Wardrobe	€180	+30%
TV cabinet	€200	+30%
Delivery	costs	+€35

calculate total costs.

calculate........

3​(3)​[?]​​​​

calculate.......

2​(6)​[?]​​​​

calculate.......

5​(3)​[?]​​​​

calculate.......

1​(100)​[?]​​​​

Reken uit.........
√25

1. 5
2. 1
3. 2
4. 25

roots.......

√1 = 1x1      =1

√4= 2x2    =2

√9= 3x3    = 3

√16= 4x4  = 4

√25= 5x5  = 5

√36= 6x6  = 6

√enzovoorts

What is de the square root of 49

What is de the square root of 64

What is de the square root of 81

What is de the square root of 144

9 + 21 : 3 =

1. 10
2. 18
3. 16
4. 24

€1.400 : 4 x 2 =

1. €600
2. €175
3. €150
4. €700

3 x (2 + 12) : 0 =

1. 0
2. 1
3. 52
4. 18

3x (√81+11) +

2​(3)​[?]​​​​

1. 523
2. 68
3. 40
4. 56

The End

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