Wednesday, May 29, 2013

Math Subtraction Problems Online Study


Introduction to Math Subtraction Problems Online Study:

Many online websites are available today. In those websites, subtracting a number from another number can be explained step by step briefly about the topic for lower grade students to understand clearly. The subtraction is said to be removing a part from the whole. The act of taking one number away from another is known as subtraction in math. For example, subtracting 4 – 2 is 2. Let us see about math subtraction problems online study in this article.Please express your views of this topic 3 digit subtraction with regrouping by commenting on blog.


Worked Examples to Math Subtraction Problems Online Study

Let us learn some of the solved examples explained through online about subtraction in math.

Problem 1:

Solve subtraction of two numbers 63 – (-12).

Solution:

Step 1:

Here, the number 63 is minuend and the number 12 is subtrahend.

Let us write the given number one under the other like,

63 (minuend)

12 (subtrahend)

------------------------

Here, the subtrahend is minus 12 so minus into minus is equal to plus.

Add those numbers and put the sign of larger number to the result.

Step 2:

Add the one’s place and this carry can be added to the tens place.

3 + 2 = 5

Step 3:

Add the tens place,

6 + 1 = 7

Step 4:

Regroup the numbers, we get,

7 + 5 = 75

The larger number is + 63. So, the sign of the result is also + 75.

Therefore, the solution for adding 63 – (-12) is 75.

Problem 2:

Solve subtraction of two numbers – 34 – 45.

Solution:

Step 1:

Here, the number 24 is minuend and the number 45 is subtrahend.

Let us write the given number one under the other like,

24 (minuend)

45 (subtrahend)

---------------------------

Add those numbers and put negative sign before the result.

Step 2:

Add the one’s place,  we get,

4 + 5 = 9

Step 3:

Add the tens place with carry of one’s place,

2 + 4 = 6

Step 4:

Regroup the numbers, we get,

6 + 9 = 69

Therefore, the solution for subtracting – 24 – 45 is 69.


Another Problem to Math Subtraction Problems Online Study


Problem 3:

Solve subtraction of two numbers 23 – 8.

Solution:

Step 1:

Here, the number 23 is minuend and the number 8 is subtrahend.

Let us write the given number one under the other like,

23 (minuend)

08 (subtrahend)

---------------------------

Subtract the two numbers and place the sign of larger number before the answer.

Step 2:

Subtract the one’s place,  we get,

3 – 8 = we cannot subtract 8 from 3. So, we borrow 1 from the minuend tens place 2. So the one's place becomes 13 – 8 = 5 and the tens place of minuend becomes 2 – 1 = 1.

Step 3:

Subtract the tens place, we get,

1 – 0 = 1 (There is no tens place column in the subtrahend place)

Step 4:

Regroup the numbers, we get,

1 + 5 = 15

Therefore, the solution for subtracting 23 – 8 is 15.

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Practice Problems to Math Subtraction Problems Online Study


1. Subtraction of two numbers  – 42 – 12.

Key: - 54

2. Subtraction of two numbers – 23 – (- 13).

Key: - 10

3. Subtraction of two numbers 18 – (- 2).

Key: 20

4. Subtraction of two numbers 43 – 37.

Key: 6

5. Subtraction of two numbers - 26 + 31.

Key: 5

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