Scroll:Mental Sums >> Mental Sums >> saq (1210)

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)  

8 x 10 000 + 5 x 1000 + 5 x 100 + 8 x 1 = _____        

What is the missing number in the blank


Answer:_______________




2)  

4 x 10 000 + 1 x 1000 + 5 x 100 + 2 x 1 = _____        

What is the missing number in the blank


Answer:_______________




3)  

6 x 10 000 + 3 x 1000 + 3 x 100 + 6 x 1 = _____        

What is the missing number in the blank


Answer:_______________




4)  

7 x 10 000 + 2 x 1000 + 5 x 100 + 9 x 1 = _____        

What is the missing number in the blank


Answer:_______________




5)  

2 x 10 000 + 4 x 1000 + 7 x 100 + 3 x 1 = _____        

What is the missing number in the blank


Answer:_______________




6)  

3 x 10 000 + 9 x 1000 + 1 x 100 + 5 x 1 = _____        

What is the missing number in the blank


Answer:_______________




7)  

3 x 10 000 + 2 x 1000 + 7 x 100 + 1 x 1 = _____        

What is the missing number in the blank


Answer:_______________




8)  

1 x 10 000 + 1 x 1000 + 6 x 100 + 3 x 1 = _____        

What is the missing number in the blank


Answer:_______________




9)  

6 x 10 000 + 9 x 1000 + 7 x 100 + 6 x 1 = _____        

What is the missing number in the blank


Answer:_______________




10)  

7 x 10 000 + 6 x 1000 + 4 x 100 + 8 x 1 = _____        

What is the missing number in the blank


Answer:_______________




 

1)  

8 x 10 000 + 5 x 1000 + 5 x 100 + 8 x 1 = _____        

What is the missing number in the blank
Answer: 85508


SOLUTION 1 :

Step 1: 8 x 10000 = 80000
Step 2: 5 x 1000 = 5000
Step 3: 5 x 100 = 500
Step 4: 8 x 1 = 8
Step 5: 80000 + 5000 + 500 + 8 = 85508

The missing number is 85508.



2)  

4 x 10 000 + 1 x 1000 + 5 x 100 + 2 x 1 = _____        

What is the missing number in the blank
Answer: 41502


SOLUTION 1 :

Step 1: 4 x 10000 = 40000
Step 2: 1 x 1000 = 1000
Step 3: 5 x 100 = 500
Step 4: 2 x 1 = 2
Step 5: 40000 + 1000 + 500 + 2 = 41502

The missing number is 41502.



3)  

6 x 10 000 + 3 x 1000 + 3 x 100 + 6 x 1 = _____        

What is the missing number in the blank
Answer: 63306


SOLUTION 1 :

Step 1: 6 x 10000 = 60000
Step 2: 3 x 1000 = 3000
Step 3: 3 x 100 = 300
Step 4: 6 x 1 = 6
Step 5: 60000 + 3000 + 300 + 6 = 63306

The missing number is 63306.



4)  

7 x 10 000 + 2 x 1000 + 5 x 100 + 9 x 1 = _____        

What is the missing number in the blank
Answer: 72509


SOLUTION 1 :

Step 1: 7 x 10000 = 70000
Step 2: 2 x 1000 = 2000
Step 3: 5 x 100 = 500
Step 4: 9 x 1 = 9
Step 5: 70000 + 2000 + 500 + 9 = 72509

The missing number is 72509.



5)  

2 x 10 000 + 4 x 1000 + 7 x 100 + 3 x 1 = _____        

What is the missing number in the blank
Answer: 24703


SOLUTION 1 :

Step 1: 2 x 10000 = 20000
Step 2: 4 x 1000 = 4000
Step 3: 7 x 100 = 700
Step 4: 3 x 1 = 3
Step 5: 20000 + 4000 + 700 + 3 = 24703

The missing number is 24703.



6)  

3 x 10 000 + 9 x 1000 + 1 x 100 + 5 x 1 = _____        

What is the missing number in the blank
Answer: 39105


SOLUTION 1 :

Step 1: 3 x 10000 = 30000
Step 2: 9 x 1000 = 9000
Step 3: 1 x 100 = 100
Step 4: 5 x 1 = 5
Step 5: 30000 + 9000 + 100 + 5 = 39105

The missing number is 39105.



7)  

3 x 10 000 + 2 x 1000 + 7 x 100 + 1 x 1 = _____        

What is the missing number in the blank
Answer: 32701


SOLUTION 1 :

Step 1: 3 x 10000 = 30000
Step 2: 2 x 1000 = 2000
Step 3: 7 x 100 = 700
Step 4: 1 x 1 = 1
Step 5: 30000 + 2000 + 700 + 1 = 32701

The missing number is 32701.



8)  

1 x 10 000 + 1 x 1000 + 6 x 100 + 3 x 1 = _____        

What is the missing number in the blank
Answer: 11603


SOLUTION 1 :

Step 1: 1 x 10000 = 10000
Step 2: 1 x 1000 = 1000
Step 3: 6 x 100 = 600
Step 4: 3 x 1 = 3
Step 5: 10000 + 1000 + 600 + 3 = 11603

The missing number is 11603.



9)  

6 x 10 000 + 9 x 1000 + 7 x 100 + 6 x 1 = _____        

What is the missing number in the blank
Answer: 69706


SOLUTION 1 :

Step 1: 6 x 10000 = 60000
Step 2: 9 x 1000 = 9000
Step 3: 7 x 100 = 700
Step 4: 6 x 1 = 6
Step 5: 60000 + 9000 + 700 + 6 = 69706

The missing number is 69706.



10)  

7 x 10 000 + 6 x 1000 + 4 x 100 + 8 x 1 = _____        

What is the missing number in the blank
Answer: 76408


SOLUTION 1 :

Step 1: 7 x 10000 = 70000
Step 2: 6 x 1000 = 6000
Step 3: 4 x 100 = 400
Step 4: 8 x 1 = 8
Step 5: 70000 + 6000 + 400 + 8 = 76408

The missing number is 76408.