Scroll:Mental Sums >> Mental Sums >> saq (503)

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.

6100 × 110 = 61 × 11 × _____


Answer:_______________




2)  

Solve the problem below.

600 × 50 = 60 × 5 × _____


Answer:_______________




3)  

Solve the problem below.

600 × 20 = 6 × 2 × _____


Answer:_______________




4)  

Solve the problem below.

250 × 50 = 25 × 50 × _____


Answer:_______________




5)  

Solve the problem below.

9600 × 120 = 96 × 12 × _____


Answer:_______________




6)  

Solve the problem below.

700 × 20 = 70 × 2 × _____


Answer:_______________




7)  

Solve the problem below.

1700 × 20 = 17 × 2 × _____


Answer:_______________




8)  

Solve the problem below.

40 × 50 = 4 × 50 × _____


Answer:_______________




9)  

Solve the problem below.

7000 × 250 = 70 × 25 × _____


Answer:_______________




10)  

Solve the problem below.

1700 × 50 = 170 × 5 × _____


Answer:_______________




 

1)  

Solve the problem below.

6100 × 110 = 61 × 11 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 6100 x 110 = 671 000
Step 2: 61 x 11 = 671
Step 3: 671 000 ÷ 671 = 1000



2)  

Solve the problem below.

600 × 50 = 60 × 5 × _____

Answer: 100


SOLUTION 1 :

Step 1: 600 x 50 = 30000
Step 2: 60 x 5 = 300
Step 3: 30000 ÷ 300 = 100



3)  

Solve the problem below.

600 × 20 = 6 × 2 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 600 x 20 = 12 000
Step 2: 6 x 2 = 12
Step 3: 12 000 ÷ 12 = 1000



4)  

Solve the problem below.

250 × 50 = 25 × 50 × _____

Answer: 10


SOLUTION 1 :

Step 1: 250 x 50 = 12500
Step 2: 25 x 50 = 1250
Step 3: 12500 ÷ 1250 = 10



5)  

Solve the problem below.

9600 × 120 = 96 × 12 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 9600 x 120 = 1152 000
Step 2: 96 x 12 = 1152
Step 3: 1152 000 ÷ 1152 = 1000



6)  

Solve the problem below.

700 × 20 = 70 × 2 × _____

Answer: 100


SOLUTION 1 :

Step 1: 700 x 20 = 14000
Step 2: 70 x 2 = 140
Step 3: 14000 ÷ 140 = 100



7)  

Solve the problem below.

1700 × 20 = 17 × 2 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 1700 x 20 = 34 000
Step 2: 17 x 2 = 34
Step 3: 34 000 ÷ 34 = 1000



8)  

Solve the problem below.

40 × 50 = 4 × 50 × _____

Answer: 10


SOLUTION 1 :

Step 1: 40 x 50 = 2000
Step 2: 4 x 50 = 200
Step 3: 2000 ÷ 200 = 10



9)  

Solve the problem below.

7000 × 250 = 70 × 25 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 7000 x 250 = 1750 000
Step 2: 70 x 25 = 1750
Step 3: 1750 000 ÷ 1750 = 1000



10)  

Solve the problem below.

1700 × 50 = 170 × 5 × _____

Answer: 100


SOLUTION 1 :

Step 1: 1700 x 50 = 85000
Step 2: 170 x 5 = 850
Step 3: 85000 ÷ 850 = 100