CBSE Class 3 Mathematics Subtraction Worksheet Set A

LEARNING OBJECTIVES

This lesson will help you to :—
• understand the concept of subtraction using a 10 x 10 grid.
• subtract 2 digit numbers.
• subtract 3 digit numbers.
• subtract 4 digit numbers.
• apply subtraction to real life situations.

Real Life Examples
• Elevator is a real life example of addition and subtraction.
The ground floor is considered to be 0.
• Subtraction helps in calculating the amount left in bank account after debits

QUICK CONCEPT REVIEW
Subtraction is taking away a certain number of objects from a bigger set of objects.

Amazing Facts

• Subtract is formed by two words “sub” and “tract”.
“Sub” means “below” and “tract” means “to pull away”.
• When we subtract zero from a particular number (or digit of a number) we get the number (or the digit) itself.
For example: 413 - 0 = 413

MORE ABOUT SUBTRACTION
• Subtraction is one of the basic four operations.
• It is denoted by the symbol “-”.
For example: 12 subtracted from 45 can be written as 45 - 12.
• The number of items left after subtraction is called “difference”.
• A 10 x 10 number grid is a helpful tool to subtract 2-digit numbers.
• Some words that denote subtraction are “minus”, “take away” and “left”.
• Subtraction can be done in different ways
→ Counting in tens : 47 - 34 = 47 – 10 -10-10-4
→ Place value: 56 - 13
6 – 3 = 3
50 – 10 = 40
40 + 3 = 43
• To make subtraction easier it is important to regroup the numbers.
For example: 781 - 676
subtract the ones = 11 - 6 = 5
subtract the tens = 70 – 70 = 0
subtract the hundreds = 700 – 600 = 100
100 + 5 = 105
Similarly for four digit numbers first of all subtract ones digit, then tens, then hundreds and then thousands respectively.
Subtract 8564 – 7120
Step –1 : Subtract the ones.
Step –2 : Subtract the tens.
Step–3 : Subtract the hundreds.
Step 4 : Subtract the thousands

So, 8564 – 7120 = 1444

Historical Preview
• The plus and minus symbols were in use before they appeared in print.
For example, they were painted on barrels to indicate whether or not the barrels were full.

Misconcept/ Concept
Misconcept: Subtraction is commutative.
Concept: Subtraction is not commutative.
For example: 18 – 13 is not equal to 13 – 18

PROPERTIES OF SUBTRACTION

Property-1 
When we subtract zero from a number, we get the same number.
Example : 26 – 0 = 26

Property-2
When we subtract 1 from a number, we get the predecessor of the other number.
Example : 45 – 1
= 44 (Predecessor)

Property-3
When we subtract a number from itself, the difference is zero.
Example : 126 – 126 = 0

PLAY TIME :
• Pick up a 3 digit number. Mix the digits of the number and form a new 3-digit number.
Subtract the smaller number from the bigger number.

Do you Know?
• Numbers can be added in any order but they cannot be subtracted in any order.

Question. Find the missing digit.
5? – 21 = 35
(a) 3
(b) 4
(c) 5
(d) 6
Answer : (D) Consider the unit digit in both numbers on LHS so ‘?’ – 1 = 5 = > ? = 6
56 – 21 = 35

Question. Find the missing digit.
906 – 5?5 = 351
(a) 3
(b) 4
(c) 5
(d) 6
Answer : (C) 906 – 555 = 351

Question. Find the missing number.
670 : 620 :: 140 : ?
(a) 150
(b) 190
(c) 90
(d) 50
Answer : (C) 670 – 50 = 620
140 – 50 = 90
So ? = 90

Question. Find the difference between 245 and 300.
(a) 45
(b) 50
(c) 55
(d) 65
Answer : (C) As 300 – 245 = 55

Question. Find the missing number.
350 : 100 : : ? : 200
(a) 260
(b) 110
(c) 210
(d) 450
Answer : (D) 350 – 250 = 100
450 – 250 = 200

Question. Simplify:
14 + 4 – 4 – 3
(a) 11
(b) 12
(c) 13
(d) 14
Answer : (A) Since 14 + 4 – 4 – 3 = 18 – 4 – 3 = 14 – 3 = 11

Question. Find the missing number.
340, 310, ___, 250, ____
(a) 280, 220
(b) 210, 280
(c) 270, 210
(d) 270, 220
Answer : (A) Subtract 30 from each term to get the next term.
340 -30 = 310
310 – 30 = 280
280 – 30 = 250
250 – 30 = 220

Question. Simplify: [{(160 – 56) – 3} – 20]
(a) 85
(b) 81
(c) 80
(d) 82
Answer : (B) Since [{(160 – 56)–3}–20]
= [{104 – 3} – 20]
= [101 – 20] = 81

Question. Find the missing number.
_____, 650, 635, 620, _____.
(a) 665, 595
(b) 675, 595
(c) 665, 605
(d) 675, 605
Answer : (C) Subtract 15 from each term to get the next term.
665 -15 = 650
650 – 15 = 635
635 – 15 = 620
620 – 15 = 605

Question. Which number makes the equation true?
? – 456 = 888 - 555
(a) 789
(b) 333
(c) 889
(d) 779
Answer : (A) 789 – 456 = 888 – 555 = 333

Question. Which of the following is true?
(a) 33 is less than 23
(b) 43 is less than 33
(c) 23 is more than 33
(d) 43 is more than 33
Answer : (D) 43 is more than 33

Question. Which number makes the equation true?
657 – ? = 681 - 242
(a) 220
(b) 228
(c) 218
(d) 219
Answer : (C) 657 – 218 = 681 - 242= 439

Question. Which of the following is same as 12 – 3?
(a) 12 – 9
(b) 3 + 6
(c) 12 – 6
(d) 9 + 6
Answer : (B) Since 12 – 3 = 9 and 3 + 6 = 9

Question. Which number makes the equation true?
200 – 150 = 678 - ?
(a) 628
(b) 528
(c) 523
(d) 623
Answer : (A) 200 – 150 = 678 - 628= 50

Question. Simplify: 100 – 10- (100 – 10)
(a) 0
(b) 100
(c) 90
(d) 100
Answer : (A) As 100 – 10 – (100 – 10) = 90 – (90) = 0

Question. What is the missing number that makes the number sentence true?
? + 19 + 7 = 33
(a) 6
(b) 7
(c) 58
(d) 59
Answer : (B) As 19 + 7 = 26 and 33 – 26 = 7

Question. Which number makes the equation true?
66 – ? = 80 – 32
(a) 68
(b) 18
(c) 58
(d) 38
Answer : (B) 66 – 18 = 80 – 32 = 48

Question. Which one of the following numbers should be subtracted from to 67 get 37 ?
(a) 30
(b) 37
(c) 31
(d) 27
Answer : (A) As 67 – 30 = 37

Question. Which number makes the equation true?
99 – 22 = 88 - ?
(a) 13
(b) 10
(c) 12
(d) 11
Answer : (D) 99 – 22 = 88 - 11 = 77

UNIT – 3 – SUBTRACTION

I. Fill in the blanks :

1. The answer in subtraction is called the ______________________________.

2. When we subtract a number from itself, the answer is always _______________

3. When we subtract zero from a number, the answer is the ___________________

4. 29 – 10 = _______________________.

5. 253 – 0 = _______________________.

6. 500 – 1 = _______________________.

7. 6954 – 6954 = ________________________.

8. 1000 – 1 = __________________________.

9. 30 – 29 = _____________________.

10. In 78 – 28 = 50, the difference is ____________________________.

II. Subtract the following :

742 – 420

98 – 73

9872 – 3572

8379 – 4299

573 – 278

2003 – 1049

5000 – 695

632 – 289

6700 – 2935

Please click the below link to access CBSE Class 3 Mathematics Worksheet (60) - Subraction