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.

400 × 40 = 4 × 4 × _____


Answer:_______________




2)  

Solve the problem below.

5100 × 190 = 51 × 19 × _____


Answer:_______________




3)  

Solve the problem below.

1300 × 50 = 130 × 5 × _____


Answer:_______________




4)  

Solve the problem below.

110 × 30 = 11 × 30 × _____


Answer:_______________




5)  

Solve the problem below.

2200 × 20 = 22 × 2 × _____


Answer:_______________




6)  

Solve the problem below.

7200 × 140 = 72 × 14 × _____


Answer:_______________




7)  

Solve the problem below.

100 × 40 = 10 × 4 × _____


Answer:_______________




8)  

Solve the problem below.

30 × 20 = 3 × 20 × _____


Answer:_______________




9)  

Solve the problem below.

1400 × 50 = 14 × 5 × _____


Answer:_______________




10)  

Solve the problem below.

1100 × 70 = 11 × 7 × _____


Answer:_______________




 

1)  

Solve the problem below.

400 × 40 = 4 × 4 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 400 x 40 = 16 000
Step 2: 4 x 4 = 16
Step 3: 16 000 ÷ 16 = 1000



2)  

Solve the problem below.

5100 × 190 = 51 × 19 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 5100 x 190 = 969 000
Step 2: 51 x 19 = 969
Step 3: 969 000 ÷ 969 = 1000



3)  

Solve the problem below.

1300 × 50 = 130 × 5 × _____

Answer: 100


SOLUTION 1 :

Step 1: 1300 x 50 = 65000
Step 2: 130 x 5 = 650
Step 3: 65000 ÷ 650 = 100



4)  

Solve the problem below.

110 × 30 = 11 × 30 × _____

Answer: 10


SOLUTION 1 :

Step 1: 110 x 30 = 3300
Step 2: 11 x 30 = 330
Step 3: 3300 ÷ 330 = 10



5)  

Solve the problem below.

2200 × 20 = 22 × 2 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 2200 x 20 = 44 000
Step 2: 22 x 2 = 44
Step 3: 44 000 ÷ 44 = 1000



6)  

Solve the problem below.

7200 × 140 = 72 × 14 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 7200 x 140 = 1008 000
Step 2: 72 x 14 = 1008
Step 3: 1008 000 ÷ 1008 = 1000



7)  

Solve the problem below.

100 × 40 = 10 × 4 × _____

Answer: 100


SOLUTION 1 :

Step 1: 100 x 40 = 4000
Step 2: 10 x 4 = 40
Step 3: 4000 ÷ 40 = 100



8)  

Solve the problem below.

30 × 20 = 3 × 20 × _____

Answer: 10


SOLUTION 1 :

Step 1: 30 x 20 = 600
Step 2: 3 x 20 = 60
Step 3: 600 ÷ 60 = 10



9)  

Solve the problem below.

1400 × 50 = 14 × 5 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 1400 x 50 = 70 000
Step 2: 14 x 5 = 70
Step 3: 70 000 ÷ 70 = 1000



10)  

Solve the problem below.

1100 × 70 = 11 × 7 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 1100 x 70 = 77 000
Step 2: 11 x 7 = 77
Step 3: 77 000 ÷ 77 = 1000