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.

1600 × 30 = 160 × 3 × _____


Answer:_______________




2)  

Solve the problem below.

200 × 40 = 2 × 4 × _____


Answer:_______________




3)  

Solve the problem below.

3900 × 200 = 39 × 20 × _____


Answer:_______________




4)  

Solve the problem below.

130 × 40 = 13 × 40 × _____


Answer:_______________




5)  

Solve the problem below.

1000 × 50 = 100 × 5 × _____


Answer:_______________




6)  

Solve the problem below.

1300 × 20 = 13 × 2 × _____


Answer:_______________




7)  

Solve the problem below.

4500 × 190 = 45 × 19 × _____


Answer:_______________




8)  

Solve the problem below.

130 × 30 = 13 × 30 × _____


Answer:_______________




9)  

Solve the problem below.

1300 × 50 = 130 × 5 × _____


Answer:_______________




10)  

Solve the problem below.

400 × 30 = 4 × 3 × _____


Answer:_______________




 

1)  

Solve the problem below.

1600 × 30 = 160 × 3 × _____

Answer: 100


SOLUTION 1 :

Step 1: 1600 x 30 = 48000
Step 2: 160 x 3 = 480
Step 3: 48000 ÷ 480 = 100



2)  

Solve the problem below.

200 × 40 = 2 × 4 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 200 x 40 = 8 000
Step 2: 2 x 4 = 8
Step 3: 8 000 ÷ 8 = 1000



3)  

Solve the problem below.

3900 × 200 = 39 × 20 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 3900 x 200 = 780 000
Step 2: 39 x 20 = 780
Step 3: 780 000 ÷ 780 = 1000



4)  

Solve the problem below.

130 × 40 = 13 × 40 × _____

Answer: 10


SOLUTION 1 :

Step 1: 130 x 40 = 5200
Step 2: 13 x 40 = 520
Step 3: 5200 ÷ 520 = 10



5)  

Solve the problem below.

1000 × 50 = 100 × 5 × _____

Answer: 100


SOLUTION 1 :

Step 1: 1000 x 50 = 50000
Step 2: 100 x 5 = 500
Step 3: 50000 ÷ 500 = 100



6)  

Solve the problem below.

1300 × 20 = 13 × 2 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 1300 x 20 = 26 000
Step 2: 13 x 2 = 26
Step 3: 26 000 ÷ 26 = 1000



7)  

Solve the problem below.

4500 × 190 = 45 × 19 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 4500 x 190 = 855 000
Step 2: 45 x 19 = 855
Step 3: 855 000 ÷ 855 = 1000



8)  

Solve the problem below.

130 × 30 = 13 × 30 × _____

Answer: 10


SOLUTION 1 :

Step 1: 130 x 30 = 3900
Step 2: 13 x 30 = 390
Step 3: 3900 ÷ 390 = 10



9)  

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



10)  

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