Scroll:Operations with decimals >> Add, subtract, multiply and divide decimals: word problems >> saq (3920)


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 bikes 0.6 kilometres each school day. In total, how far will Steven bike over 6 school days

kilometres


Answer:_______________




2)  

Each piece of cardboard is 0.9 centimetres thick. If Indra stacks 8 pieces of cardboard on top of one another, how thick will the stack be

centimetres


Answer:_______________




3)  

A sandwich shop employee Amutha takes 5.5 minutes to make a sandwich. How long does it take her to make 4 sandwiches

minutes


Answer:_______________




4)  

Aravindh placed 4 weights on a scale during science class. If each weight weighed 5.8 grams, what did the scale read

grams


Answer:_______________




5)  

Savithri bought plastic tubes that are each 0.7 metres long. If Savithri makes a line of 6 tubes by placing them end-to-end, how long will it be

metres


Answer:_______________




6)  

Amutha bikes 0.8 kilometres each school day. In total, how far will Steven bike over 5 school days

kilometres


Answer:_______________




7)  

Each piece of cardboard is 0.6 centimetres thick. If Kumutha stacks 8 pieces of cardboard on top of one another, how thick will the stack be

centimetres


Answer:_______________




8)  

A sandwich shop employee Jeevini takes 4.5 minutes to make a sandwich. How long does it take her to make 4 sandwiches

minutes


Answer:_______________




9)  

Prem placed 2 weights on a scale during science class. If each weight weighed 4.7 grams, what did the scale read

grams


Answer:_______________




10)  

Pavi bought plastic tubes that are each 0.9 metres long. If Pavi makes a line of 7 tubes by placing them end-to-end, how long will it be

metres


Answer:_______________




 

1)  

Chellamal bikes 0.6 kilometres each school day. In total, how far will Steven bike over 6 school days

Answer: 3.6 kilometres


SOLUTION 1 :

Solve:

Multiply as you would multiply whole numbers.

0.6
x     6
-----------------
36

Count the number of decimal places in the factors. There is 1 decimal place in 0.6 Move the decimal point 1 place to the left in the answer.

            36. → 3.6

3.6
 



2)  

Each piece of cardboard is 0.9 centimetres thick. If Indra stacks 8 pieces of cardboard on top of one another, how thick will the stack be

Answer: 7.2 centimetres


SOLUTION 1 :

Solve:

Multiply the thickness of each piece of cardboard by the number of pieces in the stack

Multiply as you would multiply whole numbers.

0.9
x     8
-----------------
72

Count the number of decimal places in the factors. There is 1 decimal place in 0.9 Move the decimal point 1 place to the left in the answer.

            72. → 7.2

The stack will be 7.2 centimetres thick.
 



3)  

A sandwich shop employee Amutha takes 5.5 minutes to make a sandwich. How long does it take her to make 4 sandwiches

Answer: 22 minutes


SOLUTION 1 :

Solve:

 

Multiply the time it takes to make a sandwich by the number of sandwiches.

 

Multiply as you would multiply whole numbers.

 

5.5
x     4
-----------------
220

Count the number of decimal places in the factors. There is 1 decimal place in 5.5 Move the decimal point 1 place to the left in the answer.

            220. → 22

It takes Amutha 22 minutes to make 4 sandwiches.
 



4)  

Aravindh placed 4 weights on a scale during science class. If each weight weighed 5.8 grams, what did the scale read

Answer: 23.2 grams


SOLUTION 1 :

Solve:

 Multiply as you would multiply whole numbers.

 

5.8
x     4
-----------------
232

Count the number of decimal places in the factors. There is 1 decimal place in 5.8 Move the decimal point 1 place to the left in the answer.

            232. → 23.2

ans =  23.2


 



5)  

Savithri bought plastic tubes that are each 0.7 metres long. If Savithri makes a line of 6 tubes by placing them end-to-end, how long will it be

Answer: 4.2 metres


SOLUTION 1 :

Solve:

Multiply the length of each plastic tube by the number of tubes.

Multiply as you would multiply whole numbers.

0.7
x     6
-----------------
42

Count the number of decimal places in the factors. There is 1 decimal place in 0.7 Move the decimal point 1 place to the left in the answer.

            42. → 4.2

The line of plastic tubes will be 4.2 metres long.
 



6)  

Amutha bikes 0.8 kilometres each school day. In total, how far will Steven bike over 5 school days

Answer: 4 kilometres


SOLUTION 1 :

Solve:

Multiply as you would multiply whole numbers.

0.8
x     5
-----------------
40

Count the number of decimal places in the factors. There is 1 decimal place in 0.8 Move the decimal point 1 place to the left in the answer.

            40. → 4

4
 



7)  

Each piece of cardboard is 0.6 centimetres thick. If Kumutha stacks 8 pieces of cardboard on top of one another, how thick will the stack be

Answer: 4.8 centimetres


SOLUTION 1 :

Solve:

Multiply the thickness of each piece of cardboard by the number of pieces in the stack

Multiply as you would multiply whole numbers.

0.6
x     8
-----------------
48

Count the number of decimal places in the factors. There is 1 decimal place in 0.6 Move the decimal point 1 place to the left in the answer.

            48. → 4.8

The stack will be 4.8 centimetres thick.
 



8)  

A sandwich shop employee Jeevini takes 4.5 minutes to make a sandwich. How long does it take her to make 4 sandwiches

Answer: 18 minutes


SOLUTION 1 :

Solve:

 

Multiply the time it takes to make a sandwich by the number of sandwiches.

 

Multiply as you would multiply whole numbers.

 

4.5
x     4
-----------------
180

Count the number of decimal places in the factors. There is 1 decimal place in 4.5 Move the decimal point 1 place to the left in the answer.

            180. → 18

It takes Jeevini 18 minutes to make 4 sandwiches.
 



9)  

Prem placed 2 weights on a scale during science class. If each weight weighed 4.7 grams, what did the scale read

Answer: 9.4 grams


SOLUTION 1 :

Solve:

 Multiply as you would multiply whole numbers.

 

4.7
x     2
-----------------
94

Count the number of decimal places in the factors. There is 1 decimal place in 4.7 Move the decimal point 1 place to the left in the answer.

            94. → 9.4

ans =  9.4


 



10)  

Pavi bought plastic tubes that are each 0.9 metres long. If Pavi makes a line of 7 tubes by placing them end-to-end, how long will it be

Answer: 6.3 metres


SOLUTION 1 :

Solve:

Multiply the length of each plastic tube by the number of tubes.

Multiply as you would multiply whole numbers.

0.9
x     7
-----------------
63

Count the number of decimal places in the factors. There is 1 decimal place in 0.9 Move the decimal point 1 place to the left in the answer.

            63. → 6.3

The line of plastic tubes will be 6.3 metres long.