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

What is the missing number in the blank


Answer:_______________




2)  

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

What is the missing number in the blank


Answer:_______________




3)  

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

What is the missing number in the blank


Answer:_______________




4)  

7 x 10 000 + 9 x 1000 + 2 x 100 + 6 x 1 = _____        

What is the missing number in the blank


Answer:_______________




5)  

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

What is the missing number in the blank


Answer:_______________




6)  

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

What is the missing number in the blank


Answer:_______________




7)  

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

What is the missing number in the blank


Answer:_______________




8)  

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

What is the missing number in the blank


Answer:_______________




9)  

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

What is the missing number in the blank


Answer:_______________




10)  

4 x 10 000 + 2 x 1000 + 9 x 100 + 8 x 1 = _____        

What is the missing number in the blank


Answer:_______________




 

1)  

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

What is the missing number in the blank
Answer: 74305


SOLUTION 1 :

Step 1: 7 x 10000 = 70000
Step 2: 4 x 1000 = 4000
Step 3: 3 x 100 = 300
Step 4: 5 x 1 = 5
Step 5: 70000 + 4000 + 300 + 5 = 74305

The missing number is 74305.



2)  

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

What is the missing number in the blank
Answer: 86801


SOLUTION 1 :

Step 1: 8 x 10000 = 80000
Step 2: 6 x 1000 = 6000
Step 3: 8 x 100 = 800
Step 4: 1 x 1 = 1
Step 5: 80000 + 6000 + 800 + 1 = 86801

The missing number is 86801.



3)  

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

What is the missing number in the blank
Answer: 35302


SOLUTION 1 :

Step 1: 3 x 10000 = 30000
Step 2: 5 x 1000 = 5000
Step 3: 3 x 100 = 300
Step 4: 2 x 1 = 2
Step 5: 30000 + 5000 + 300 + 2 = 35302

The missing number is 35302.



4)  

7 x 10 000 + 9 x 1000 + 2 x 100 + 6 x 1 = _____        

What is the missing number in the blank
Answer: 79206


SOLUTION 1 :

Step 1: 7 x 10000 = 70000
Step 2: 9 x 1000 = 9000
Step 3: 2 x 100 = 200
Step 4: 6 x 1 = 6
Step 5: 70000 + 9000 + 200 + 6 = 79206

The missing number is 79206.



5)  

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

What is the missing number in the blank
Answer: 36506


SOLUTION 1 :

Step 1: 3 x 10000 = 30000
Step 2: 6 x 1000 = 6000
Step 3: 5 x 100 = 500
Step 4: 6 x 1 = 6
Step 5: 30000 + 6000 + 500 + 6 = 36506

The missing number is 36506.



6)  

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

What is the missing number in the blank
Answer: 49502


SOLUTION 1 :

Step 1: 4 x 10000 = 40000
Step 2: 9 x 1000 = 9000
Step 3: 5 x 100 = 500
Step 4: 2 x 1 = 2
Step 5: 40000 + 9000 + 500 + 2 = 49502

The missing number is 49502.



7)  

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

What is the missing number in the blank
Answer: 78402


SOLUTION 1 :

Step 1: 7 x 10000 = 70000
Step 2: 8 x 1000 = 8000
Step 3: 4 x 100 = 400
Step 4: 2 x 1 = 2
Step 5: 70000 + 8000 + 400 + 2 = 78402

The missing number is 78402.



8)  

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

What is the missing number in the blank
Answer: 75709


SOLUTION 1 :

Step 1: 7 x 10000 = 70000
Step 2: 5 x 1000 = 5000
Step 3: 7 x 100 = 700
Step 4: 9 x 1 = 9
Step 5: 70000 + 5000 + 700 + 9 = 75709

The missing number is 75709.



9)  

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

What is the missing number in the blank
Answer: 88702


SOLUTION 1 :

Step 1: 8 x 10000 = 80000
Step 2: 8 x 1000 = 8000
Step 3: 7 x 100 = 700
Step 4: 2 x 1 = 2
Step 5: 80000 + 8000 + 700 + 2 = 88702

The missing number is 88702.



10)  

4 x 10 000 + 2 x 1000 + 9 x 100 + 8 x 1 = _____        

What is the missing number in the blank
Answer: 42908


SOLUTION 1 :

Step 1: 4 x 10000 = 40000
Step 2: 2 x 1000 = 2000
Step 3: 9 x 100 = 900
Step 4: 8 x 1 = 8
Step 5: 40000 + 2000 + 900 + 8 = 42908

The missing number is 42908.