Scroll:Operations >> Numbers >> ps (134)

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)  

Chellamal has some 5-gram and 10-gram weights. The weights add up to 85 g. There are 2 more 5-gram weights than 10-gram weights.

How many 5-gram weights and 10-gram weights does Chellamal have

ten-gram weights

five-gram weights



Answer:_______________




2)  

Selvanayaki has some 20-cent coins and 50-cent coins. The coins add up to $290.00. There are 15 more 20-cent coins than 50-cent coins.

How many 20-cent coins and 50-cent coins Selvanayaki has 

twenty-cent coins

fifty-cent coins




Answer:_______________




3)  

Haritha has some 5-cent and 10-cent coins. The coins add up to 120 cents. There are 3 more 5-cent coins than 10-cent coins. How many 5-cent coins than 10-cent coins.

How many 5-cent coins and 10-cent coins has Haritha got

five-cent coins

ten-cent coins


Answer:_______________




4)  

Poongodi has some 5-gram and 10-gram weights. The weights add up to 165 g. There are 3 more 5-gram weights than 10-gram weights.

How many 5-gram weights and 10-gram weights does Poongodi have

ten-gram weights

five-gram weights



Answer:_______________




5)  

Thamarai has some 20-cent coins and 50-cent coins. The coins add up to $193.20. There are 21 more 20-cent coins than 50-cent coins.

How many 20-cent coins and 50-cent coins Thamarai has 

twenty-cent coins

fifty-cent coins




Answer:_______________




6)  

Selvanayaki has some 5-cent and 10-cent coins. The coins add up to 160 cents. There are 2 more 5-cent coins than 10-cent coins. How many 5-cent coins than 10-cent coins.

How many 5-cent coins and 10-cent coins has Selvanayaki got

five-cent coins

ten-cent coins


Answer:_______________




7)  

Selvanayaki has some 5-gram and 10-gram weights. The weights add up to 115 g. There are 5 more 5-gram weights than 10-gram weights.

How many 5-gram weights and 10-gram weights does Selvanayaki have

ten-gram weights

five-gram weights



Answer:_______________




8)  

Ovini has some 20-cent coins and 50-cent coins. The coins add up to $85.20. There are 6 more 20-cent coins than 50-cent coins.

How many 20-cent coins and 50-cent coins Ovini has 

twenty-cent coins

fifty-cent coins




Answer:_______________




9)  

Poongodi has some 5-cent and 10-cent coins. The coins add up to 175 cents. There are 8 more 5-cent coins than 10-cent coins. How many 5-cent coins than 10-cent coins.

How many 5-cent coins and 10-cent coins has Poongodi got

five-cent coins

ten-cent coins


Answer:_______________




10)  

Savithri has some 5-gram and 10-gram weights. The weights add up to 175 g. There are 2 more 5-gram weights than 10-gram weights.

How many 5-gram weights and 10-gram weights does Savithri have

ten-gram weights

five-gram weights



Answer:_______________




 

1)  

Chellamal has some 5-gram and 10-gram weights. The weights add up to 85 g. There are 2 more 5-gram weights than 10-gram weights.

How many 5-gram weights and 10-gram weights does Chellamal have

Answer: 5 ten-gram weights

Answer: 7 five-gram weights



SOLUTION 1 :

There are 2 more 5-gram weights than 10-gram weights.

 Step 1: The value of the 2 (5-gram weights) → 2 x 5 g
     = 10 g
 Step 2: 85 g - 10 g  = 75 g
 Step 3: 5 g + 10 g  = 15 g (1 set)
 Step 4: 75 g ÷ 15 g = 5 (10-gram weights)
 Step 5: 5 + 2  = 7 (5-gram weights)

 

 

 

Chellamal has 7 five-gram weights and 5 ten-gram weights



2)  

Selvanayaki has some 20-cent coins and 50-cent coins. The coins add up to $290.00. There are 15 more 20-cent coins than 50-cent coins.

How many 20-cent coins and 50-cent coins Selvanayaki has 

Answer: 425 twenty-cent coins

Answer: 410 fifty-cent coins




SOLUTION 1 :

There are 15 more 20-cent coins than 50-cent coins.

 Step 1: The value of the 15 (20-cent coins) → 15 x 20
     = 300 cents
     = $3.00
 Step 2: $290.00 - $3.00  = $287.00
 Step 3: The value of each set of one 20-cent and one 50-cent coins is  = 20 + 50
     = 70 cents (1 set)
     = $0.70
 Step 4: $287.00 ÷ $0.70 = 410 (50-cent coins)
 Step 5: 410 + 15  = 425 (20-cent coins)

 

 Selvanayaki has 425 twenty-cent coins and 410 fifty-cent coins.



3)  

Haritha has some 5-cent and 10-cent coins. The coins add up to 120 cents. There are 3 more 5-cent coins than 10-cent coins. How many 5-cent coins than 10-cent coins.

How many 5-cent coins and 10-cent coins has Haritha got

Answer: 10 five-cent coins

Answer: 7 ten-cent coins


SOLUTION 1 :

There are 3 more 5-cent coins then 10-cent coins.

 Step 1: The value of the 3 five-cent coins → 3 x 5
     = 15 cents
 Step 2: 120 cents - 15 cents  = 105 cents
 Step 3: The value of 1 set of 1 five-cent coin and 1 ten-cent coin → 5 cents + 10 cents
     = 15 cents
 Step 4: 105 ÷ 15 cents  = 7 (10-cent coins)
  7 + 3  = 10 (5-cent coins)

 

 Haritha has 10 five-cent coins and 7 ten-cent coins.



4)  

Poongodi has some 5-gram and 10-gram weights. The weights add up to 165 g. There are 3 more 5-gram weights than 10-gram weights.

How many 5-gram weights and 10-gram weights does Poongodi have

Answer: 10 ten-gram weights

Answer: 13 five-gram weights



SOLUTION 1 :

There are 3 more 5-gram weights than 10-gram weights.

 Step 1: The value of the 3 (5-gram weights) → 3 x 5 g
     = 15 g
 Step 2: 165 g - 15 g  = 150 g
 Step 3: 5 g + 10 g  = 15 g (1 set)
 Step 4: 150 g ÷ 15 g = 10 (10-gram weights)
 Step 5: 10 + 3  = 13 (5-gram weights)

 

 

 

Poongodi has 13 five-gram weights and 10 ten-gram weights



5)  

Thamarai has some 20-cent coins and 50-cent coins. The coins add up to $193.20. There are 21 more 20-cent coins than 50-cent coins.

How many 20-cent coins and 50-cent coins Thamarai has 

Answer: 291 twenty-cent coins

Answer: 270 fifty-cent coins




SOLUTION 1 :

There are 21 more 20-cent coins than 50-cent coins.

 Step 1: The value of the 21 (20-cent coins) → 21 x 20
     = 420 cents
     = $4.20
 Step 2: $193.20 - $4.20  = $189.00
 Step 3: The value of each set of one 20-cent and one 50-cent coins is  = 20 + 50
     = 70 cents (1 set)
     = $0.70
 Step 4: $189.00 ÷ $0.70 = 270 (50-cent coins)
 Step 5: 270 + 21  = 291 (20-cent coins)

 

 Thamarai has 291 twenty-cent coins and 270 fifty-cent coins.



6)  

Selvanayaki has some 5-cent and 10-cent coins. The coins add up to 160 cents. There are 2 more 5-cent coins than 10-cent coins. How many 5-cent coins than 10-cent coins.

How many 5-cent coins and 10-cent coins has Selvanayaki got

Answer: 12 five-cent coins

Answer: 10 ten-cent coins


SOLUTION 1 :

There are 2 more 5-cent coins then 10-cent coins.

 Step 1: The value of the 2 five-cent coins → 2 x 5
     = 10 cents
 Step 2: 160 cents - 10 cents  = 150 cents
 Step 3: The value of 1 set of 1 five-cent coin and 1 ten-cent coin → 5 cents + 10 cents
     = 15 cents
 Step 4: 150 ÷ 15 cents  = 10 (10-cent coins)
  10 + 2  = 12 (5-cent coins)

 

 Selvanayaki has 12 five-cent coins and 10 ten-cent coins.



7)  

Selvanayaki has some 5-gram and 10-gram weights. The weights add up to 115 g. There are 5 more 5-gram weights than 10-gram weights.

How many 5-gram weights and 10-gram weights does Selvanayaki have

Answer: 6 ten-gram weights

Answer: 11 five-gram weights



SOLUTION 1 :

There are 5 more 5-gram weights than 10-gram weights.

 Step 1: The value of the 5 (5-gram weights) → 5 x 5 g
     = 25 g
 Step 2: 115 g - 25 g  = 90 g
 Step 3: 5 g + 10 g  = 15 g (1 set)
 Step 4: 90 g ÷ 15 g = 6 (10-gram weights)
 Step 5: 6 + 5  = 11 (5-gram weights)

 

 

 

Selvanayaki has 11 five-gram weights and 6 ten-gram weights



8)  

Ovini has some 20-cent coins and 50-cent coins. The coins add up to $85.20. There are 6 more 20-cent coins than 50-cent coins.

How many 20-cent coins and 50-cent coins Ovini has 

Answer: 126 twenty-cent coins

Answer: 120 fifty-cent coins




SOLUTION 1 :

There are 6 more 20-cent coins than 50-cent coins.

 Step 1: The value of the 6 (20-cent coins) → 6 x 20
     = 120 cents
     = $1.20
 Step 2: $85.20 - $1.20  = $84.00
 Step 3: The value of each set of one 20-cent and one 50-cent coins is  = 20 + 50
     = 70 cents (1 set)
     = $0.70
 Step 4: $84.00 ÷ $0.70 = 120 (50-cent coins)
 Step 5: 120 + 6  = 126 (20-cent coins)

 

 Ovini has 126 twenty-cent coins and 120 fifty-cent coins.



9)  

Poongodi has some 5-cent and 10-cent coins. The coins add up to 175 cents. There are 8 more 5-cent coins than 10-cent coins. How many 5-cent coins than 10-cent coins.

How many 5-cent coins and 10-cent coins has Poongodi got

Answer: 17 five-cent coins

Answer: 9 ten-cent coins


SOLUTION 1 :

There are 8 more 5-cent coins then 10-cent coins.

 Step 1: The value of the 8 five-cent coins → 8 x 5
     = 40 cents
 Step 2: 175 cents - 40 cents  = 135 cents
 Step 3: The value of 1 set of 1 five-cent coin and 1 ten-cent coin → 5 cents + 10 cents
     = 15 cents
 Step 4: 135 ÷ 15 cents  = 9 (10-cent coins)
  9 + 8  = 17 (5-cent coins)

 

 Poongodi has 17 five-cent coins and 9 ten-cent coins.



10)  

Savithri has some 5-gram and 10-gram weights. The weights add up to 175 g. There are 2 more 5-gram weights than 10-gram weights.

How many 5-gram weights and 10-gram weights does Savithri have

Answer: 11 ten-gram weights

Answer: 13 five-gram weights



SOLUTION 1 :

There are 2 more 5-gram weights than 10-gram weights.

 Step 1: The value of the 2 (5-gram weights) → 2 x 5 g
     = 10 g
 Step 2: 175 g - 10 g  = 165 g
 Step 3: 5 g + 10 g  = 15 g (1 set)
 Step 4: 165 g ÷ 15 g = 11 (10-gram weights)
 Step 5: 11 + 2  = 13 (5-gram weights)

 

 

 

Savithri has 13 five-gram weights and 11 ten-gram weights