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)  

7 x 10 000 + 3 x 1000 + 5 x 100 + 2 x 1 = _____        

What is the missing number in the blank


Answer:_______________




2)  

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

What is the missing number in the blank


Answer:_______________




3)  

9 x 10 000 + 9 x 1000 + 9 x 100 + 8 x 1 = _____        

What is the missing number in the blank


Answer:_______________




4)  

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

What is the missing number in the blank


Answer:_______________




5)  

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

What is the missing number in the blank


Answer:_______________




6)  

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

What is the missing number in the blank


Answer:_______________




7)  

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

What is the missing number in the blank


Answer:_______________




8)  

6 x 10 000 + 4 x 1000 + 6 x 100 + 5 x 1 = _____        

What is the missing number in the blank


Answer:_______________




9)  

4 x 10 000 + 9 x 1000 + 1 x 100 + 8 x 1 = _____        

What is the missing number in the blank


Answer:_______________




10)  

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

What is the missing number in the blank


Answer:_______________




 

1)  

7 x 10 000 + 3 x 1000 + 5 x 100 + 2 x 1 = _____        

What is the missing number in the blank
Answer: 73502


SOLUTION 1 :

Step 1: 7 x 10000 = 70000
Step 2: 3 x 1000 = 3000
Step 3: 5 x 100 = 500
Step 4: 2 x 1 = 2
Step 5: 70000 + 3000 + 500 + 2 = 73502

The missing number is 73502.



2)  

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

What is the missing number in the blank
Answer: 38108


SOLUTION 1 :

Step 1: 3 x 10000 = 30000
Step 2: 8 x 1000 = 8000
Step 3: 1 x 100 = 100
Step 4: 8 x 1 = 8
Step 5: 30000 + 8000 + 100 + 8 = 38108

The missing number is 38108.



3)  

9 x 10 000 + 9 x 1000 + 9 x 100 + 8 x 1 = _____        

What is the missing number in the blank
Answer: 99908


SOLUTION 1 :

Step 1: 9 x 10000 = 90000
Step 2: 9 x 1000 = 9000
Step 3: 9 x 100 = 900
Step 4: 8 x 1 = 8
Step 5: 90000 + 9000 + 900 + 8 = 99908

The missing number is 99908.



4)  

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

What is the missing number in the blank
Answer: 37302


SOLUTION 1 :

Step 1: 3 x 10000 = 30000
Step 2: 7 x 1000 = 7000
Step 3: 3 x 100 = 300
Step 4: 2 x 1 = 2
Step 5: 30000 + 7000 + 300 + 2 = 37302

The missing number is 37302.



5)  

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

What is the missing number in the blank
Answer: 31405


SOLUTION 1 :

Step 1: 3 x 10000 = 30000
Step 2: 1 x 1000 = 1000
Step 3: 4 x 100 = 400
Step 4: 5 x 1 = 5
Step 5: 30000 + 1000 + 400 + 5 = 31405

The missing number is 31405.



6)  

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

What is the missing number in the blank
Answer: 26107


SOLUTION 1 :

Step 1: 2 x 10000 = 20000
Step 2: 6 x 1000 = 6000
Step 3: 1 x 100 = 100
Step 4: 7 x 1 = 7
Step 5: 20000 + 6000 + 100 + 7 = 26107

The missing number is 26107.



7)  

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

What is the missing number in the blank
Answer: 54404


SOLUTION 1 :

Step 1: 5 x 10000 = 50000
Step 2: 4 x 1000 = 4000
Step 3: 4 x 100 = 400
Step 4: 4 x 1 = 4
Step 5: 50000 + 4000 + 400 + 4 = 54404

The missing number is 54404.



8)  

6 x 10 000 + 4 x 1000 + 6 x 100 + 5 x 1 = _____        

What is the missing number in the blank
Answer: 64605


SOLUTION 1 :

Step 1: 6 x 10000 = 60000
Step 2: 4 x 1000 = 4000
Step 3: 6 x 100 = 600
Step 4: 5 x 1 = 5
Step 5: 60000 + 4000 + 600 + 5 = 64605

The missing number is 64605.



9)  

4 x 10 000 + 9 x 1000 + 1 x 100 + 8 x 1 = _____        

What is the missing number in the blank
Answer: 49108


SOLUTION 1 :

Step 1: 4 x 10000 = 40000
Step 2: 9 x 1000 = 9000
Step 3: 1 x 100 = 100
Step 4: 8 x 1 = 8
Step 5: 40000 + 9000 + 100 + 8 = 49108

The missing number is 49108.



10)  

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

What is the missing number in the blank
Answer: 28407


SOLUTION 1 :

Step 1: 2 x 10000 = 20000
Step 2: 8 x 1000 = 8000
Step 3: 4 x 100 = 400
Step 4: 7 x 1 = 7
Step 5: 20000 + 8000 + 400 + 7 = 28407

The missing number is 28407.