CBSE Class 4 Maths Addition And Subtraction Worksheet Set 02

CBSE Class 4 Maths Revision Worksheet (135) - Addition and Subtraction

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Revision Worksheet - 2 (St. Thomas' School, Session 2014-15) - Subject: Mathematics, Topic: Addition and Subtraction

Q1. Fill ups:

Question 1. i. 1 + 899 = ____
Answer: 900
In simple words: Adding 1 to 899 gives the next number after 899.

Exam Tip: Count one more from the given number.

Question 1. ii. Successor of 2001 is ____
Answer: 2002
In simple words: The successor is the number that comes just after.

Exam Tip: Successor = number + 1.

Question 1. iii. 14 + 10 + 2 = 10 + 2 + ____
Answer: 14
In simple words: Addition can be done in any order, so the numbers can swap places.

Exam Tip: Look at which number is missing on the right side.

Question 1. iv. Predecessor of 1100 is ____
Answer: 1099
In simple words: The predecessor is the number that comes just before.

Exam Tip: Predecessor = number - 1.

Question 1. v. 6712 + 0 = ____
Answer: 6712
In simple words: Adding zero does not change a number.

Exam Tip: Any number plus 0 is the same number.

Question 1. vi. 1235 + 389 = ____
Answer: 1624
In simple words: Add the ones, tens, hundreds and thousands column by column.

Exam Tip: Carry over when a column adds to 10 or more.

Question 1. vii. 9876 - 10 = ____
Answer: 9866
In simple words: Taking away 10 reduces the tens place by one.

Exam Tip: Subtract from the tens column first.

Question 1. viii. 1689 - 0 = ____
Answer: 1689
In simple words: Subtracting zero does not change a number.

Exam Tip: Any number minus 0 is the same number.

Question 1. ix. 1001 - ____ = 1000
Answer: 1
In simple words: 1001 take away 1 leaves 1000.

Exam Tip: Find the difference between 1001 and 1000.

Question 1. x. 189 - 189 = ____
Answer: 0
In simple words: A number taken away from itself leaves zero.

Exam Tip: Same number minus same number is 0.

Q2. Solve the following:

Question 2. i. 8792 + 6352
Answer: 15144
In simple words: Add the columns from right to left and carry over.

Exam Tip: Write the numbers in neat columns before adding.

Question 2. ii. 5364 + 7629
Answer: 12993
In simple words: Add each place value and carry when needed.

Exam Tip: Check the carries as you go.

Question 2. iii. 1490 + 9951
Answer: 11441
In simple words: Add the ones, tens, hundreds and thousands.

Exam Tip: Remember to carry from one column to the next.

Question 2. iv. 7562 - 3481
Answer: 4081
In simple words: Subtract each column, borrowing when needed.

Exam Tip: Borrow from the next column when the top digit is smaller.

Question 2. v. 9210 - 4702
Answer: 4508
In simple words: Subtract column by column, borrowing where needed.

Exam Tip: Check your answer by adding it back to the smaller number.

Question 2. vi. 3519 - 1683
Answer: 1836
In simple words: Subtract the ones, tens, hundreds and thousands in turn.

Exam Tip: Borrow carefully across zeros.

Q3. Estimate the sum and difference of the following:

Question 3. i. 511 + 328 (nearest 100) = ____
Answer: 500 + 300 = 800
In simple words: Round each number to the nearest hundred, then add.

Exam Tip: Look at the tens digit to decide whether to round up or down.

Question 3. ii. 2987 + 4692 (nearest 1000) = ____
Answer: 3000 + 5000 = 8000
In simple words: Round each number to the nearest thousand, then add.

Exam Tip: Look at the hundreds digit to round to thousands.

Question 3. iii. 450 - 321 (nearest 10) = ____
Answer: 450 - 320 = 130
In simple words: Round each number to the nearest ten, then subtract.

Exam Tip: 321 is nearest to 320.

Question 3. iv. 8350 - 2914 (nearest 1000) = ____
Answer: 8000 - 3000 = 5000
In simple words: Round each number to the nearest thousand, then subtract.

Exam Tip: 8350 rounds to 8000 and 2914 rounds to 3000.

Question 4. There are 3289 birds in a bird sanctuary. 1438 more birds join during summer. Find the number of birds in summer.
Answer: 3289 + 1438 = 4727 birds
In simple words: Add the new birds to the birds already there.

Exam Tip: Words like 'more' and 'join' tell you to add.

Question 6. What is the difference between smallest 6 digit number and greatest 4 digit number?
Answer: 100000 - 9999 = 90001
In simple words: The smallest 6-digit number is 100000 and the greatest 4-digit number is 9999. Subtract the smaller from the bigger.

Exam Tip: The smallest 6-digit number is 1 followed by five zeros.

Q8. Fill in the missing digit:

Question 8. i. 8940 - 7_21 = 1319
Answer: 6 (8940 - 7621 = 1319)
In simple words: Find the missing digit by subtracting to check the answer.

Exam Tip: Work backwards from the answer to find the missing digit.

Question 8. ii. 5217 + 169_ = 6909
Answer: 2 (5217 + 1692 = 6909)
In simple words: The missing digit is the number that makes the addition correct.

Exam Tip: Subtract 5217 from 6909 to find the missing number.