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.

20 x 2250 = 20 x 25 x __________.


Answer:_______________




2)  

Solve the problem below.

29 x 360 = 29 x 4 x __________.


Answer:_______________




3)  

Solve the problem below.

29 x 1680 = 29 x 28 x __________.


Answer:_______________




4)  

Solve the problem below.

23 x 350 = 23 x 5 x __________.


Answer:_______________




5)  

Solve the problem below.

26 x 1680 = 26 x 28 x __________.


Answer:_______________




6)  

Solve the problem below.

21 x 320 = 21 x 4 x __________.


Answer:_______________




7)  

Solve the problem below.

20 x 720 = 20 x 24 x __________.


Answer:_______________




8)  

Solve the problem below.

29 x 100 = 29 x 2 x __________.


Answer:_______________




9)  

Solve the problem below.

23 x 810 = 23 x 27 x __________.


Answer:_______________




10)  

Solve the problem below.

24 x 40 = 24 x 2 x __________.


Answer:_______________




 

1)  

Solve the problem below.

20 x 2250 = 20 x 25 x __________.

Answer: 90


SOLUTION 1 :

Step 1: 20 x 2250 = 45000
Step 2: 20 x 25 = 500
Step 3: 45000 ÷ 500 = 90



2)  

Solve the problem below.

29 x 360 = 29 x 4 x __________.

Answer: 90


SOLUTION 1 :

Step 1: 29 x 360 = 10440
Step 2: 29 x 4 = 116
Step 3: 10440 ÷ 116 = 90



3)  

Solve the problem below.

29 x 1680 = 29 x 28 x __________.

Answer: 60


SOLUTION 1 :

Step 1: 29 x 1680 = 48720
Step 2: 29 x 28 = 812
Step 3: 48720 ÷ 812 = 60



4)  

Solve the problem below.

23 x 350 = 23 x 5 x __________.

Answer: 70


SOLUTION 1 :

Step 1: 23 x 350 = 8050
Step 2: 23 x 5 = 115
Step 3: 8050 ÷ 115 = 70



5)  

Solve the problem below.

26 x 1680 = 26 x 28 x __________.

Answer: 60


SOLUTION 1 :

Step 1: 26 x 1680 = 43680
Step 2: 26 x 28 = 728
Step 3: 43680 ÷ 728 = 60



6)  

Solve the problem below.

21 x 320 = 21 x 4 x __________.

Answer: 80


SOLUTION 1 :

Step 1: 21 x 320 = 6720
Step 2: 21 x 4 = 84
Step 3: 6720 ÷ 84 = 80



7)  

Solve the problem below.

20 x 720 = 20 x 24 x __________.

Answer: 30


SOLUTION 1 :

Step 1: 20 x 720 = 14400
Step 2: 20 x 24 = 480
Step 3: 14400 ÷ 480 = 30



8)  

Solve the problem below.

29 x 100 = 29 x 2 x __________.

Answer: 50


SOLUTION 1 :

Step 1: 29 x 100 = 2900
Step 2: 29 x 2 = 58
Step 3: 2900 ÷ 58 = 50



9)  

Solve the problem below.

23 x 810 = 23 x 27 x __________.

Answer: 30


SOLUTION 1 :

Step 1: 23 x 810 = 18630
Step 2: 23 x 27 = 621
Step 3: 18630 ÷ 621 = 30



10)  

Solve the problem below.

24 x 40 = 24 x 2 x __________.

Answer: 20


SOLUTION 1 :

Step 1: 24 x 40 = 960
Step 2: 24 x 2 = 48
Step 3: 960 ÷ 48 = 20