Percentage of a Quantity

​Assalamualaikum and morning class..

​Please take some moment to recall back what we have learnt before on percentages..

​

​Now, before you attempt any questions, PLEASE READ AND UNDERSTAND THE SLIDES CAREFULLY :)

Poll

Now, before our lesson begin, lets recap back what we have learnt before on percentages...

Now, choose those you think are correct..

actually class, ALL the answer is CORRECT!​

Now, try next question..​

Poll

Now, choose those you think are correct..

• 20% of 100

  $$\frac{20}{100}$$  x 100

  = 20

• 20% x 100

  0.2 x 100

• 8% of 60

  0.08 x 60

• Mrs. Patrick bought a package of 15 markers. 20% of them were blue the others were black. How many markers were blue?

  3 markers

actually class, ALL the answer is CORRECT too!​

​Ok, lets start..

Continuation on percentage:

expressing one quantity as a percentage of another

by Tcr Hanisah

​We express one quantity as a percentage of another by,

​For DIFFERENT UNIT example,

pls remember these steps!!

Multiple Choice

Question:

Express 500ml as a percentage of 5 litres.

What is the first step in solving this question?

• ​Making sure the units of all quantities are the same or as requested by the question.

• Setting up the first quantity as a fraction of second quantity.

• Convert the fraction into a percentage by multiplying by 100%

Fill in the Blank

Then,

what is 5 litres in ml,

if 1 litre is equal to 1000ml..

Multiple Choice

Now, what is the next step?

• $$\frac{500}{5000}$$  

• $$\frac{500}{1000}$$  

Multiple Choice

What is the final step?

• Making sure the units of all quantities are the same or as requested by the question.

• Convert the fraction into a percentage by multiplying by 100%

• Setting up the first quantity as a fraction of second quantity.

Fill in the Blank

$$\frac{500}{5000}\times100\ =$$  ??  %

​For SAME UNIT example,

pls remember these steps!!

​Now, lets proceed to our exercise...

Multiple Choice

Express    $$\frac{12}{25}$$   as a percentage..

• 48%

• 50%

• 42%

• 12%

Multiple Choice

Express 38 as a percentage of 200

• 21%

• 20%

• 19%

• 18%

Multiple Choice

Express 60 as a percentage of 80..

• 75%

• 60%

• 80%

Multiple Choice

A jogging route is 10km long. Haziq has jogged 4km. What percentage of the route has Haziq jogged?

• 50%

• 25%

• 4%

• 40%

Multiple Choice

Asmawi completed  $$\frac{3}{4}$$  of his assignment. What percentage of his assignment did he finish?

• 70%

• 50%

• 25%

• 75%

Multiple Choice

Maria participated in a marathon. She managed to complete $$\frac{11}{20}$$  of the race. What percentage of the marathon did she complete?

• 50%

• 11%

• 55%

• 20%

Multiple Choice

Challenging question:

100 students entered a coloring competition.

58 of them were boys.

What percentage of the students who entered the competition were girls?

• 42%

• 58%

• 50%

• 40%

​Thank you for today class, please read

Surah A-Asr' before we end our class..