In real life, we do not see problems written as 25 + 13 = ? Instead, we hear things like, "Rani has 25 mangoes and Ravi gives her 13 more. How many does she have now?"
These are called word problems. We need to read the problem carefully, find the clue words, decide the operation (add, subtract, or multiply), and then solve it.
We use addition when we need to find the total or combine two or more groups.
Clue words for addition: total, altogether, in all, sum, combined, how many in all, both together.
Anita has 145 stickers. Her friend Priya gives her 78 more stickers. How many stickers does Anita have altogether?
Clue word: altogether Operation: Addition
Solution: 145 + 78 = 223. Anita has 223 stickers altogether.
We use subtraction when we need to find how many are left or the difference between two numbers.
Clue words for subtraction: left, remaining, how many more, difference, fewer, gave away, lost.
A shopkeeper in Jaipur had 350 bananas. He sold 126 bananas. How many bananas are remaining?
Clue word: remaining Operation: Subtraction
Solution: 350 - 126 = 224. The shopkeeper has 224 bananas remaining.
We use multiplication when we have equal groups and need to find the total.
Clue words for multiplication: each, every, groups of, times, per.
There are 5 rows of chairs in a classroom. Each row has 8 chairs. How many chairs are there in all?
Clue word: each Operation: Multiplication
Solution: 5 x 8 = 40. There are 40 chairs in all.
| Operation | Clue Words |
|---|---|
| Addition (+) | total, altogether, in all, sum, combined, both together, how many in all |
| Subtraction (-) | left, remaining, difference, fewer, gave away, lost, how many more |
| Multiplication (x) | each, every, groups of, times, per, equal groups |
| Word | Meaning |
|---|---|
| Word problem | A maths problem written in words instead of just numbers |
| Clue word | A word in the problem that tells you which operation to use |
| Operation | The action you perform: addition, subtraction, or multiplication |
| Altogether | The total when things are added together |
| Remaining | What is left after taking some away |
Solve the following word problems. Show your working.
Write one word problem for each operation using things from your daily life.
1. An addition word problem:
2. A subtraction word problem:
3. A multiplication word problem: