Page 24 - Math Skill - 4

2 2 Addition and Subtraction
Addition and Subtraction

Learning Outcomes

� Addition without Regrouping � Subtraction without Regrouping � Properties of Subtraction
� Addition with Regrouping � Subtraction with Regrouping � Addition and Subtraction Together
� Missing digits in an Addition Sum � Missing Digits in a Subtraction Sum � Estimate of Sum and Difference
� Properties of addition � Checking Subtraction using Addition

Boot-Up

Roshan bought 7182 marbles and
sold 5218 out of these. On the next

day, he bought 8000 more marbles.
How many marbles Roshan has with Working

him? 6 11 7 12

Thus, 7 1 8 2
total number of marbles he has – 5 2 1 8
= 1964 + 8000 = _________ . 1 9 6 4
Therefore, Roshan has _________
marbles with him.

Complete the Magic Sums
2 8 15

3 10 Working

4 20 1 9 6 4

17 7 21
+ 8 0 0 0

Addition without Regrouping

The rule to add large numbers is same as that for 4-digit numbers. To add the large numbers,
arrange the numbers in columns and then add starting from ones place and then moving
towards the left one place after another.