1st Class Mathematics Subtraction Subtraction of Three Numbers

   Subtraction of Three Numbers

Let's see the given below example:  

Here, we have to subtract two numbersandbecause both numbers have '_' sign.

Now,

Step 1:   Add the numbers with '_' sign.

Step 2:   Do subtraction as subtraction of two numbers.

Thus,

Take another example:  

Here,

Step 1:   Add numbers with ' + ' sign

Step 2: Do the subtraction as subtraction of two numbers.

Thus,

Therefore, above given two examples makes the concept of subtraction of three numbers clear.  

 Jack has 6 Chocolates, he eats 2 chocolates in the morning and again 2 in the evening, how many chocolates he has now?

(a) 3                                                      

(b) 1

(c) 5                                                      

(d) 2

Answer: (d)

Explanation

  7 - 3 + 5 = ?

(a) 9

(b) 6

(c) 5                  

(d) 8  

Answer: (a)

Explanation

  Subtraction of Figures

Numbers etc

Figures = 2 rupees, 3 books, 1 kg, 6 hours, etc.

Now, how to subtract figures?

In fact, we subtract figures with simple method of subtraction we have learned so far.  

hours -hours =hours  

Trick:

Take another example:

Trick:

bananas -bananas -banana

8 Bananas -(2 Bananas + 1 Bananas)

 Zacob subtracts 4 rupees out of 8 rupees. Find the result.

(a) 5 rupees                                       

(b) 3 rupees

(c) 2 rupees                                       

(d) 4 rupees

Answer: (d)  

Explanation

 7 kg + 1 kg - 3 kg =

(a) 2kg                                                 

(b) 3kg

(c) 5kg                                                  

(d) 6kg  

Answer: (c)

Explanation