Page 23 - Maths Class 04
P. 23
2 Addition and Subtraction
Looking Back
Addition means putting things or numbers together.
Example : Add 6428 and 1361.
Solution : Write the numbers in the columns and follow the given steps :
Step 1 : Adding ones Step 2 : Adding tens
TH H T O TH H T O
6 4 2 8 6 4 2 8
+ 1 3 6 1 + 1 3 6 1
9 8 9
Step 3 : Adding hundreds Step 4 : Adding thousands
TH H T O TH H T O
6 4 2 8 6 4 2 8
+ 1 3 6 1 + 1 3 6 1
7 8 9 7 7 8 9
Therefore, the sum of 6428 and 1361 is 7789.
Subtraction means taking away things from a group.
Example : Subtract 8432 from 9642.
Solution : Write the numbers in the columns and follow the given steps :
Step 1 : Subtract ones Step 2 : Subtract tens
TH H T O TH H T O
9 6 4 2 9 6 4 2
– 8 4 3 2 – 8 4 3 2
0 1 0
Mathematics-4 23
