Subtraction

The answer of a subtraction sum is called DIFFERENCE.

How to subtract 2-digit numbers?

Steps are shown to subtract 2-digit numbers.

Subtract 189 from 638.

Line up the numbers according to place value taking care to place the bigger number on top.

How to Subtract

In the ONES column we have 8 - 9. We cannot take away 9 from 8 so we REGROUP the next place to the left. REGROUP 78 as 6 TENS and 18 ONES.

Subtract 2-digits from 2-digits

DIFFERENCE = 39
Sometimes we need to REGROUP more than once.


How to subtract 3-digit numbers?

Steps are shown to subtract 3-digit numbers.

Subtract 189 from 638.

Subtraction

REGROUP 38 as 2 TENS 18 ONES

Subtraction Steps

REGROUP 62 as 5 TENS 12 ONES


Answer: 449

We follow the same rule for subtracting 4 digits numbers or larger numbers.

How to subtract 4-digit numbers?

Steps are shown to subtract 4-digit numbers.

1. Solve: 74834 - 38915

Line up the number according to place value.
In the ONES column the number to be subtracted is greater so REGROUP as 2 TENS 14 ONES.

Subtraction Problem

Subtract the TENS column.

How to subtract?

REGROUP to subtract the numbers in the HUNDREDS column.
3 THOUSANDS 18 HUNDREDS

How to subtract?

REGROUP to subtract the numbers in the THOUSANDS column.
6 TEN THOUSANDS 13 THOUSANDS

How to subtract ?

Answer: 35919

We can subtract from a place with a zero. Just remember to REGROUP the next place to the left.


2. Subtract: 39507 - 27386

How to subtract?

Answer: 12121

REGROUP to subtract the TENS place
4 HUNDREDS 10 TENS



How to check the answer of a subtraction?

Subtract 2157 from 5438 and check your answer.

How to subtract

CHECK:

Add the DIFFERENCE to the smaller number.

How to subtract

The answer will be the smaller number.
Subtract the DIFFERENCE from the greater number.

How to subtract?

The answer will be the greater number.

In subtraction we will learn the subtraction operation of numbers having more than 4 digits with borrowing and without borrowing.

Examples:

1. Subtract 2684 from 6795.

Solution:

The numbers are arranged in column form

subtraction worksheets

(i) Ones are subtracted, 5 – 4 = 1
(ii) Tens are subtracted, 9 – 8 = 1
(iii) Hundreds are subtracted, 7 – 6 = 1
(iv) Thousands are subtracted, 6 – 2 = 4

Hence, difference = 4,111

2. Subtract 6732 from 9340 (with borrowing).

Solution:

The numbers are arranged in column form

Subtraction worksheets

(i) Ones are subtracted, 0 < 2, so 1 ten is borrowed from tens.
Now 1 Ten or 10 + 0 = 10, 10 – 2 = 8
(ii) Tens are subtracted, 3Tens – 3Tens = 0
(iii)Hundreds are subtracted, 3 Hundreds < 7 Hundreds so, 1 Thousand is borrowed,
so 10 Hundreds + 3 Hundreds = 13 Hundreds,
13 Hundreds – 7 Hundreds = 6 Hundreds.
(iv) Thousands are subtracted, 8Thousands – 6Thousands = 2Thousands

Hence, difference = 2,608

3. What is the difference between 40712 and 7549? (with borrowing)

Solution:

The numbers are arranged in column form

subtraction worksheets


(i) 2 < 9, 1T or 10 is borrowed 10 + 2 = 12, 12 – 9 = 3
(ii) 0 < 4, 1H or 10T is borrowed 10T + 0 = 10T, Now 10T – 4T = 6T
(iii) 6H – 5H = 1H
(iv) 1 Tth is borrowed, 10Th – 7Th = 3 Th
(v) 3Tth – 0 = 3Tth

So, difference = 33,163


4. Subtract 2 3 7 4 1 2 from 6 4 9 5 2 3 (without borrowing)

Solution:

Numbers are arranged in column form

subtraction worksheets

(i) 3 – 2 = 1 Ones
(ii) 2 – 1 = 1 Tens
(iii) 5 – 4 = 1 Hundreds
(iv) 9 – 7 = 2 Thousands
(v) 4 – 3 = 1 Ten thousands
(vi) 6 – 2 = 4 Hundred thousands

Therefore, difference = 412111


5. Subtract (with borrowing) 6 5 6 2 9 from 3 2 3 4 7 8

Solution:

Numbers are arranged in column form

Subtraction worksheets

(i) Ones: 8 < 9, IT or 10 is borrowed 10 + 8 = 18, 18 - 9 = 9
(ii) Tens: 6T - 2T = 4T
(iii) Hundreds: 4H < 6H, 1 th or 10H is borrowed, 10H + 4H = 14H,
14H - 6H = 8H
(iv) 2Th < 5Th, 1Tth or 10Th is borrowed 10Th + 2Th = 12Th,
12Th - 5Th = 7Th
(v) 1Tth < 6Tth,1Hth or 10Tth is borrowed 10Tth + 1Tth = 11Tth,
11Tth - 6Tth = 5Tth
(vi) 2Hth remained as it was.

So, difference = 257849

6. Find the difference between two numbers, 1 4 2 7 1 3 and 3 7 4 3 9.

Solution:

The numbers are arranged in column form.
142713 is greater than 37439, so 37439 will be subtracted from 142713.

How to subtract

Difference = 105274
(i) Ones are subtracted
3 < 9, so 1 ten is borrowed.
Now 1T or 10 + 3 = 13, 13 - 9 = 4
(ii) Tens are subtracted, 1T < 3T, so 1H is borrowed.
Now 1H or 10T + 1 = 11,
11 - 3 = 8, answer is 11 - (3 + 1) = 7
(iii) Hundred: 6H – 4H = 2H
(iv) Thousands: 12Th – 7Th = 5Th
(v) Ten thousands: 3Th - 3Th: = 0
(vi) Hundred thousand: 1Hth – 0 = 1Hth

Therefore, 142713 - 37439 = 105274

Related Concept

Addition

Word Problems on Addition

Subtraction

Check for Subtraction and Addition

Word Problems Involving Addition and Subtraction

Estimating Sums and Differences

Find the Missing Digits

Multiplication

Multiply a Number by a 2-Digit Number

Multiplication of a Number by a 3-Digit Number

Multiply a Number

Estimating Products

Word Problems on Multiplication

Multiplication and Division

Terms Used in Division

Division of Two-Digit by a One-Digit Numbers

Division of Four-Digit by a One-Digit Numbers

Division by 10 and 100 and 1000

Dividing Numbers

Estimating the Quotient

Division by Two-Digit Numbers

Word Problems on Division


4th Grade Math Activities

From Subtraction to HOME PAGE




Didn't find what you were looking for? Or want to know more information about Math Only Math. Use this Google Search to find what you need.



New! Comments

Have your say about what you just read! Leave me a comment in the box below. Ask a Question or Answer a Question.