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.

2500 × 40 = 250 × 4 × _____


Answer:_______________




2)  

Solve the problem below.

3800 × 250 = 38 × 25 × _____


Answer:_______________




3)  

Solve the problem below.

400 × 30 = 4 × 3 × _____


Answer:_______________




4)  

Solve the problem below.

200 × 50 = 20 × 50 × _____


Answer:_______________




5)  

Solve the problem below.

1800 × 50 = 180 × 5 × _____


Answer:_______________




6)  

Solve the problem below.

6300 × 110 = 63 × 11 × _____


Answer:_______________




7)  

Solve the problem below.

1500 × 30 = 15 × 3 × _____


Answer:_______________




8)  

Solve the problem below.

80 × 20 = 8 × 20 × _____


Answer:_______________




9)  

Solve the problem below.

200 × 30 = 20 × 3 × _____


Answer:_______________




10)  

Solve the problem below.

4100 × 250 = 41 × 25 × _____


Answer:_______________




 

1)  

Solve the problem below.

2500 × 40 = 250 × 4 × _____

Answer: 100


SOLUTION 1 :

Step 1: 2500 x 40 = 100000
Step 2: 250 x 4 = 1000
Step 3: 100000 ÷ 1000 = 100



2)  

Solve the problem below.

3800 × 250 = 38 × 25 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 3800 x 250 = 950 000
Step 2: 38 x 25 = 950
Step 3: 950 000 ÷ 950 = 1000



3)  

Solve the problem below.

400 × 30 = 4 × 3 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 400 x 30 = 12 000
Step 2: 4 x 3 = 12
Step 3: 12 000 ÷ 12 = 1000



4)  

Solve the problem below.

200 × 50 = 20 × 50 × _____

Answer: 10


SOLUTION 1 :

Step 1: 200 x 50 = 10000
Step 2: 20 x 50 = 1000
Step 3: 10000 ÷ 1000 = 10



5)  

Solve the problem below.

1800 × 50 = 180 × 5 × _____

Answer: 100


SOLUTION 1 :

Step 1: 1800 x 50 = 90000
Step 2: 180 x 5 = 900
Step 3: 90000 ÷ 900 = 100



6)  

Solve the problem below.

6300 × 110 = 63 × 11 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 6300 x 110 = 693 000
Step 2: 63 x 11 = 693
Step 3: 693 000 ÷ 693 = 1000



7)  

Solve the problem below.

1500 × 30 = 15 × 3 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 1500 x 30 = 45 000
Step 2: 15 x 3 = 45
Step 3: 45 000 ÷ 45 = 1000



8)  

Solve the problem below.

80 × 20 = 8 × 20 × _____

Answer: 10


SOLUTION 1 :

Step 1: 80 x 20 = 1600
Step 2: 8 x 20 = 160
Step 3: 1600 ÷ 160 = 10



9)  

Solve the problem below.

200 × 30 = 20 × 3 × _____

Answer: 100


SOLUTION 1 :

Step 1: 200 x 30 = 6000
Step 2: 20 x 3 = 60
Step 3: 6000 ÷ 60 = 100



10)  

Solve the problem below.

4100 × 250 = 41 × 25 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 4100 x 250 = 1025 000
Step 2: 41 x 25 = 1025
Step 3: 1025 000 ÷ 1025 = 1000