Page 2 - Lesson Note - 4

WORD PROBLEMS

Learning objectives: Students will learn to add two numbers in story sums using column
method.

 A word problem is a few sentences describing a “real life” situation where a problem
needs to be solved by the way of mathematical calculation.
 Word problems based on addition are of two types:
a) When objects of two or more collections are put together.
b) When an increase in number takes place.
 The key words used in problems involving addition are: sum, total, in all, all
together.
Rules for solving word problems:
Step 1: Read the question properly.
Step 2: Then identify the informative sentences and question sentence.
Step 3: Identify the operation.

Step 4: Frame statements and solve it.
Step 5: Then write the conclusion with statement.
When there is a word problem based on number of things, we start the statement
like- “Number of……”

Informative Question
Example1:
sentences sentence

There are 4523 men, 3970 women and 1432 children in a town. What is the total population of
the town?
Key word
Solution:

Th H T O
1 1
Number of men in the town=4523
4 5 2 3
Number of women in the town=3970 7 0
9
+ 3
4
+ 1
Number of children in the town=1432 3 2
= 9 9 2 5
Total population of the
town=4523+3970+1432=9925

Thus, the total population of the town is 9925.