Mathematics · Class 2
Birds Come, Birds Go
Learn Birds Come, Birds Go with notes, examples, and practice questions.
3 sections15–25 min read3 MCQs · 1 examples
Chapter Overview
Birds arriving means add; birds flying away means subtract.
Birds Come, Birds Go uses changing groups to strengthen addition and subtraction. Children translate arrivals and departures into number sentences and find missing starting, changing, or ending amounts.
Changes in a Group
- Use addition when a group grows.
- Use subtraction when a group becomes smaller.
- Draw a before-and-after picture to show the change.
Finding Missing Numbers
- For 18 + __ = 25, count on from 18 to 25.
- For __ − 6 = 14, add 14 + 6 to find the start.
- Check that the answer matches the story's direction of change.
Solved Examples
Step-by-step solutions — read each step before checking the final answer.
Birds Arrive and Leave
There are 24 birds. Nine fly away, then 5 arrive. How many birds are there now?
- 1Subtract the birds leaving: 24 − 9 = 15.
- 2Add the birds arriving: 15 + 5 = 20.
- 3The final group has 20 birds.
Answer
20 birds
Key Points to Remember
- ✓ Arrival increases a group
- ✓ Departure decreases a group
- ✓ Follow multi-step events in order
Exam Tips
- • Underline words showing come or go
- • Write one number sentence for each change
Practice MCQs — Birds Come, Birds Go
Test your understanding with topic-wise multiple choice questions. Explanations appear after each answer.
Question 1 of 3Score: 0/0
There are 15 birds and 6 arrive. How many are there?