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.

321 x 71 = (300 x 71) + (10 x 71) + ( ___ x 71)



Answer:_______________




2)  

Solve the problem below.

451 x 38 = (400 x 38) + (60 x 38) - ( ___ x 38)



Answer:_______________




3)  

Solve the problem below.

177 x 88 = (100 x 88) + (60 x 88) + ( ___ x 88)



Answer:_______________




4)  

Solve the problem below.

942 x 22 = (900 x 22) + (50 x 22) - ( ___ x 22)



Answer:_______________




5)  

Solve the problem below.

169 x 92 = (100 x 92) + (50 x 92) + ( ___ x 92)



Answer:_______________




6)  

Solve the problem below.

359 x 86 = (300 x 86) + (60 x 86) - ( ___ x 86)



Answer:_______________




7)  

Solve the problem below.

354 x 36 = (300 x 36) + (40 x 36) + ( ___ x 36)



Answer:_______________




8)  

Solve the problem below.

459 x 74 = (400 x 74) + (60 x 74) - ( ___ x 74)



Answer:_______________




9)  

Solve the problem below.

278 x 87 = (200 x 87) + (60 x 87) + ( ___ x 87)



Answer:_______________




10)  

Solve the problem below.

173 x 99 = (100 x 99) + (80 x 99) - ( ___ x 99)



Answer:_______________




 

1)  

Solve the problem below.

321 x 71 = (300 x 71) + (10 x 71) + ( ___ x 71)


Answer: 11


SOLUTION 1 :

Step 1: 300 + 10 = 310  

Step 2: 321 - 310 = 11



2)  

Solve the problem below.

451 x 38 = (400 x 38) + (60 x 38) - ( ___ x 38)


Answer: 9


SOLUTION 1 :

Step 1: 400 + 60 = 460  

Step 2: 460 - 451 = 9



3)  

Solve the problem below.

177 x 88 = (100 x 88) + (60 x 88) + ( ___ x 88)


Answer: 17


SOLUTION 1 :

Step 1: 100 + 60 = 160  

Step 2: 177 - 160 = 17



4)  

Solve the problem below.

942 x 22 = (900 x 22) + (50 x 22) - ( ___ x 22)


Answer: 8


SOLUTION 1 :

Step 1: 900 + 50 = 950  

Step 2: 950 - 942 = 8



5)  

Solve the problem below.

169 x 92 = (100 x 92) + (50 x 92) + ( ___ x 92)


Answer: 19


SOLUTION 1 :

Step 1: 100 + 50 = 150  

Step 2: 169 - 150 = 19



6)  

Solve the problem below.

359 x 86 = (300 x 86) + (60 x 86) - ( ___ x 86)


Answer: 1


SOLUTION 1 :

Step 1: 300 + 60 = 360  

Step 2: 360 - 359 = 1



7)  

Solve the problem below.

354 x 36 = (300 x 36) + (40 x 36) + ( ___ x 36)


Answer: 14


SOLUTION 1 :

Step 1: 300 + 40 = 340  

Step 2: 354 - 340 = 14



8)  

Solve the problem below.

459 x 74 = (400 x 74) + (60 x 74) - ( ___ x 74)


Answer: 1


SOLUTION 1 :

Step 1: 400 + 60 = 460  

Step 2: 460 - 459 = 1



9)  

Solve the problem below.

278 x 87 = (200 x 87) + (60 x 87) + ( ___ x 87)


Answer: 18


SOLUTION 1 :

Step 1: 200 + 60 = 260  

Step 2: 278 - 260 = 18



10)  

Solve the problem below.

173 x 99 = (100 x 99) + (80 x 99) - ( ___ x 99)


Answer: 7


SOLUTION 1 :

Step 1: 100 + 80 = 180  

Step 2: 180 - 173 = 7