Scroll:Mental Sums >> Mental Sums >> saq (492)

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)  

Solve the problem below.

118 x 21 = (100 x 21) + (20 x 21) - ( ___ x 21)



Answer:_______________




2)  

Solve the problem below.

236 x 73 = (200 x 73) + (20 x 73) + ( ___ x 73)



Answer:_______________




3)  

Solve the problem below.

854 x 87 = (800 x 87) + (60 x 87) - ( ___ x 87)



Answer:_______________




4)  

Solve the problem below.

441 x 27 = (400 x 27) + (30 x 27) + ( ___ x 27)



Answer:_______________




5)  

Solve the problem below.

462 x 23 = (400 x 23) + (70 x 23) - ( ___ x 23)



Answer:_______________




6)  

Solve the problem below.

965 x 77 = (900 x 77) + (50 x 77) + ( ___ x 77)



Answer:_______________




7)  

Solve the problem below.

732 x 47 = (700 x 47) + (40 x 47) - ( ___ x 47)



Answer:_______________




8)  

Solve the problem below.

223 x 16 = (200 x 16) + (10 x 16) + ( ___ x 16)



Answer:_______________




9)  

Solve the problem below.

979 x 89 = (900 x 89) + (80 x 89) - ( ___ x 89)



Answer:_______________




10)  

Solve the problem below.

477 x 95 = (400 x 95) + (60 x 95) + ( ___ x 95)



Answer:_______________




 

1)  

Solve the problem below.

118 x 21 = (100 x 21) + (20 x 21) - ( ___ x 21)


Answer: 2


SOLUTION 1 :

Step 1: 100 + 20 = 120  

Step 2: 120 - 118 = 2



2)  

Solve the problem below.

236 x 73 = (200 x 73) + (20 x 73) + ( ___ x 73)


Answer: 16


SOLUTION 1 :

Step 1: 200 + 20 = 220  

Step 2: 236 - 220 = 16



3)  

Solve the problem below.

854 x 87 = (800 x 87) + (60 x 87) - ( ___ x 87)


Answer: 6


SOLUTION 1 :

Step 1: 800 + 60 = 860  

Step 2: 860 - 854 = 6



4)  

Solve the problem below.

441 x 27 = (400 x 27) + (30 x 27) + ( ___ x 27)


Answer: 11


SOLUTION 1 :

Step 1: 400 + 30 = 430  

Step 2: 441 - 430 = 11



5)  

Solve the problem below.

462 x 23 = (400 x 23) + (70 x 23) - ( ___ x 23)


Answer: 8


SOLUTION 1 :

Step 1: 400 + 70 = 470  

Step 2: 470 - 462 = 8



6)  

Solve the problem below.

965 x 77 = (900 x 77) + (50 x 77) + ( ___ x 77)


Answer: 15


SOLUTION 1 :

Step 1: 900 + 50 = 950  

Step 2: 965 - 950 = 15



7)  

Solve the problem below.

732 x 47 = (700 x 47) + (40 x 47) - ( ___ x 47)


Answer: 8


SOLUTION 1 :

Step 1: 700 + 40 = 740  

Step 2: 740 - 732 = 8



8)  

Solve the problem below.

223 x 16 = (200 x 16) + (10 x 16) + ( ___ x 16)


Answer: 13


SOLUTION 1 :

Step 1: 200 + 10 = 210  

Step 2: 223 - 210 = 13



9)  

Solve the problem below.

979 x 89 = (900 x 89) + (80 x 89) - ( ___ x 89)


Answer: 1


SOLUTION 1 :

Step 1: 900 + 80 = 980  

Step 2: 980 - 979 = 1



10)  

Solve the problem below.

477 x 95 = (400 x 95) + (60 x 95) + ( ___ x 95)


Answer: 17


SOLUTION 1 :

Step 1: 400 + 60 = 460  

Step 2: 477 - 460 = 17