Scroll:Fraction >> Model Approach >> ps (380)


Written Instructions:

For each Multiple Choice Question (MCQ), four options are given. One of them is the correct answer. Make your choice (1,2,3 or 4). Write your answers in the brackets provided..

For each Short Answer Question(SAQ) and Long Answer Question(LAQ), write your answers in the blanks provided.

Leave your answers in the simplest form or correct to two decimal places.



 

1)  

Chidambaram spent 13 of his salary on food and gave 25 of his salary to his sister. In the end, he was left with $488 for himself.

a) What fraction of his salary did he have left

b) How much was his salary

$ ___


Answer:_______________




2)  

Barathan spent 12 of his salary on electronic devices and gave 13 of his salary to his sister. In the end, he was left with $762 for himself.

a) What fraction of his salary did he have left

b) How much was his salary

$ ___


Answer:_______________




3)  

Savithri spent 14 of her salary on electronic devices and gave 13 of her salary to her sister. In the end, she was left with $495 for herself.

a) What fraction of her salary did she have left

b) How much was her salary

$ ___


Answer:_______________




4)  

Selvan spent 13 of his salary on food and gave 25 of his salary to his sister. In the end, he was left with $524 for himself.

a) What fraction of his salary did he have left

b) How much was his salary

$ ___


Answer:_______________




5)  

Chidambaram spent 12 of his salary on electronic devices and gave 13 of his salary to his sister. In the end, he was left with $744 for himself.

a) What fraction of his salary did he have left

b) How much was his salary

$ ___


Answer:_______________




6)  

Thamarai spent 14 of her salary on electronic devices and gave 13 of her salary to her sister. In the end, she was left with $475 for herself.

a) What fraction of her salary did she have left

b) How much was her salary

$ ___


Answer:_______________




7)  

Balaji spent 13 of his salary on food and gave 25 of his salary to his sister. In the end, he was left with $732 for himself.

a) What fraction of his salary did he have left

b) How much was his salary

$ ___


Answer:_______________




8)  

Selvan spent 12 of his salary on electronic devices and gave 13 of his salary to his sister. In the end, he was left with $828 for himself.

a) What fraction of his salary did he have left

b) How much was his salary

$ ___


Answer:_______________




9)  

Kumutha spent 14 of her salary on electronic devices and gave 13 of her salary to her sister. In the end, she was left with $570 for herself.

a) What fraction of her salary did she have left

b) How much was her salary

$ ___


Answer:_______________




10)  

Kalai spent 13 of his salary on food and gave 25 of his salary to his sister. In the end, he was left with $604 for himself.

a) What fraction of his salary did he have left

b) How much was his salary

$ ___


Answer:_______________




 

1)  

Chidambaram spent 13 of his salary on food and gave 25 of his salary to his sister. In the end, he was left with $488 for himself.

a) What fraction of his salary did he have left

Answer: 415

b) How much was his salary

Answer: $1830


SOLUTION 1 :
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Spent
 
 
Sister
 
 
$488 left

(a)

Step 1: 1x53x5+2x35x3 = 5 15+615

                             = 1115

Step 2: 1515-1115=415

(b)

Step 3: 4 units = $488

                1 unit = $488 ÷ 4

                           = $122

Step 4: 15 units= 15 x $122

                             =$1830



2)  

Barathan spent 12 of his salary on electronic devices and gave 13 of his salary to his sister. In the end, he was left with $762 for himself.

a) What fraction of his salary did he have left

Answer: 16

b) How much was his salary

Answer: $4572


SOLUTION 1 :
 
 
 
 
 
 
 
 
Spent
 
 
Sister
 
 
$762 left

(a)

Step 1: 1x32x3+1x23x2 = 3 6+26

                        = 56

Step 2: 6 6 -56=16

(b)

Step 3: 1 unit = $762

Step 4: 6 units= $762 x 6

                       =$4572



3)  

Savithri spent 14 of her salary on electronic devices and gave 13 of her salary to her sister. In the end, she was left with $495 for herself.

a) What fraction of her salary did she have left

Answer: 512

b) How much was her salary

Answer: $1188


SOLUTION 1 :



 

 

 

 

 

 

 

 

 

 

 

 





 

 


Spent




 

 


Sister




 

 


$495 left





(a)


Step 1: 1x34x3+1x43x4 = 3 12+412


                              = 712


 Step 2: 1212-712 = 512


(b)


Step 3: 5 units = $495


              1 unit = $495 ÷ 5


                         = $99


Step 4: 12 units= 12 x $99


                             =$1188



4)  

Selvan spent 13 of his salary on food and gave 25 of his salary to his sister. In the end, he was left with $524 for himself.

a) What fraction of his salary did he have left

Answer: 415

b) How much was his salary

Answer: $1965


SOLUTION 1 :
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Spent
 
 
Sister
 
 
$524 left

(a)

Step 1: 1x53x5+2x35x3 = 5 15+615

                             = 1115

Step 2: 1515-1115=415

(b)

Step 3: 4 units = $524

                1 unit = $524 ÷ 4

                           = $131

Step 4: 15 units= 15 x $131

                             =$1965



5)  

Chidambaram spent 12 of his salary on electronic devices and gave 13 of his salary to his sister. In the end, he was left with $744 for himself.

a) What fraction of his salary did he have left

Answer: 16

b) How much was his salary

Answer: $4464


SOLUTION 1 :
 
 
 
 
 
 
 
 
Spent
 
 
Sister
 
 
$744 left

(a)

Step 1: 1x32x3+1x23x2 = 3 6+26

                        = 56

Step 2: 6 6 -56=16

(b)

Step 3: 1 unit = $744

Step 4: 6 units= $744 x 6

                       =$4464



6)  

Thamarai spent 14 of her salary on electronic devices and gave 13 of her salary to her sister. In the end, she was left with $475 for herself.

a) What fraction of her salary did she have left

Answer: 512

b) How much was her salary

Answer: $1140


SOLUTION 1 :



 

 

 

 

 

 

 

 

 

 

 

 





 

 


Spent




 

 


Sister




 

 


$475 left





(a)


Step 1: 1x34x3+1x43x4 = 3 12+412


                              = 712


 Step 2: 1212-712 = 512


(b)


Step 3: 5 units = $475


              1 unit = $475 ÷ 5


                         = $95


Step 4: 12 units= 12 x $95


                             =$1140



7)  

Balaji spent 13 of his salary on food and gave 25 of his salary to his sister. In the end, he was left with $732 for himself.

a) What fraction of his salary did he have left

Answer: 415

b) How much was his salary

Answer: $2745


SOLUTION 1 :
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Spent
 
 
Sister
 
 
$732 left

(a)

Step 1: 1x53x5+2x35x3 = 5 15+615

                             = 1115

Step 2: 1515-1115=415

(b)

Step 3: 4 units = $732

                1 unit = $732 ÷ 4

                           = $183

Step 4: 15 units= 15 x $183

                             =$2745



8)  

Selvan spent 12 of his salary on electronic devices and gave 13 of his salary to his sister. In the end, he was left with $828 for himself.

a) What fraction of his salary did he have left

Answer: 16

b) How much was his salary

Answer: $4968


SOLUTION 1 :
 
 
 
 
 
 
 
 
Spent
 
 
Sister
 
 
$828 left

(a)

Step 1: 1x32x3+1x23x2 = 3 6+26

                        = 56

Step 2: 6 6 -56=16

(b)

Step 3: 1 unit = $828

Step 4: 6 units= $828 x 6

                       =$4968



9)  

Kumutha spent 14 of her salary on electronic devices and gave 13 of her salary to her sister. In the end, she was left with $570 for herself.

a) What fraction of her salary did she have left

Answer: 512

b) How much was her salary

Answer: $1368


SOLUTION 1 :



 

 

 

 

 

 

 

 

 

 

 

 





 

 


Spent




 

 


Sister




 

 


$570 left





(a)


Step 1: 1x34x3+1x43x4 = 3 12+412


                              = 712


 Step 2: 1212-712 = 512


(b)


Step 3: 5 units = $570


              1 unit = $570 ÷ 5


                         = $114


Step 4: 12 units= 12 x $114


                             =$1368



10)  

Kalai spent 13 of his salary on food and gave 25 of his salary to his sister. In the end, he was left with $604 for himself.

a) What fraction of his salary did he have left

Answer: 415

b) How much was his salary

Answer: $2265


SOLUTION 1 :
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Spent
 
 
Sister
 
 
$604 left

(a)

Step 1: 1x53x5+2x35x3 = 5 15+615

                             = 1115

Step 2: 1515-1115=415

(b)

Step 3: 4 units = $604

                1 unit = $604 ÷ 4

                           = $151

Step 4: 15 units= 15 x $151

                             =$2265