Scroll:Mental Sums >> Mental Sums >> saq (1342)

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.

27 x 90 = 27 x 3 x __________.


Answer:_______________




2)  

Solve the problem below.

20 x 2520 = 20 x 28 x __________.


Answer:_______________




3)  

Solve the problem below.

20 x 120 = 20 x 3 x __________.


Answer:_______________




4)  

Solve the problem below.

29 x 2000 = 29 x 25 x __________.


Answer:_______________




5)  

Solve the problem below.

25 x 20 = 25 x 2 x __________.


Answer:_______________




6)  

Solve the problem below.

30 x 960 = 30 x 16 x __________.


Answer:_______________




7)  

Solve the problem below.

26 x 300 = 26 x 5 x __________.


Answer:_______________




8)  

Solve the problem below.

25 x 500 = 25 x 25 x __________.


Answer:_______________




9)  

Solve the problem below.

26 x 120 = 26 x 4 x __________.


Answer:_______________




10)  

Solve the problem below.

25 x 2430 = 25 x 27 x __________.


Answer:_______________




 

1)  

Solve the problem below.

27 x 90 = 27 x 3 x __________.

Answer: 30


SOLUTION 1 :

Step 1: 27 x 90 = 2430
Step 2: 27 x 3 = 81
Step 3: 2430 ÷ 81 = 30



2)  

Solve the problem below.

20 x 2520 = 20 x 28 x __________.

Answer: 90


SOLUTION 1 :

Step 1: 20 x 2520 = 50400
Step 2: 20 x 28 = 560
Step 3: 50400 ÷ 560 = 90



3)  

Solve the problem below.

20 x 120 = 20 x 3 x __________.

Answer: 40


SOLUTION 1 :

Step 1: 20 x 120 = 2400
Step 2: 20 x 3 = 60
Step 3: 2400 ÷ 60 = 40



4)  

Solve the problem below.

29 x 2000 = 29 x 25 x __________.

Answer: 80


SOLUTION 1 :

Step 1: 29 x 2000 = 58000
Step 2: 29 x 25 = 725
Step 3: 58000 ÷ 725 = 80



5)  

Solve the problem below.

25 x 20 = 25 x 2 x __________.

Answer: 10


SOLUTION 1 :

Step 1: 25 x 20 = 500
Step 2: 25 x 2 = 50
Step 3: 500 ÷ 50 = 10



6)  

Solve the problem below.

30 x 960 = 30 x 16 x __________.

Answer: 60


SOLUTION 1 :

Step 1: 30 x 960 = 28800
Step 2: 30 x 16 = 480
Step 3: 28800 ÷ 480 = 60



7)  

Solve the problem below.

26 x 300 = 26 x 5 x __________.

Answer: 60


SOLUTION 1 :

Step 1: 26 x 300 = 7800
Step 2: 26 x 5 = 130
Step 3: 7800 ÷ 130 = 60



8)  

Solve the problem below.

25 x 500 = 25 x 25 x __________.

Answer: 20


SOLUTION 1 :

Step 1: 25 x 500 = 12500
Step 2: 25 x 25 = 625
Step 3: 12500 ÷ 625 = 20



9)  

Solve the problem below.

26 x 120 = 26 x 4 x __________.

Answer: 30


SOLUTION 1 :

Step 1: 26 x 120 = 3120
Step 2: 26 x 4 = 104
Step 3: 3120 ÷ 104 = 30



10)  

Solve the problem below.

25 x 2430 = 25 x 27 x __________.

Answer: 90


SOLUTION 1 :

Step 1: 25 x 2430 = 60750
Step 2: 25 x 27 = 675
Step 3: 60750 ÷ 675 = 90