Chapter 6 of Class 1 Joyful Mathematics, Vegetable Farm, introduces subtraction through a farm story about picking and using vegetables. Subtraction is shown as “taking away” some objects from a group and counting how many are left.
Key Concepts
Subtraction (taking away): removing some objects from a group and counting how many remain.
The minus sign (−): the symbol used to show that objects are being taken away, read as “minus”.
Number stories for subtraction: real-life situations, like vegetables being picked or eaten, written as a subtraction sum, such as “8 carrots, 3 are eaten, 5 are left”.
Counting back: a strategy for subtracting by starting at the bigger number and counting backward by the smaller number.
Subtraction as the opposite of addition: just as addition joins groups together, subtraction is about separating a group into a smaller part and knowing what remains.
Worked Examples
Example 1
A farmer picks 9 carrots. He gives away 4 carrots. How many carrots are left? 9 − 4 = 5 carrots are left.
Example 2
There are 7 tomatoes on a plant. 2 tomatoes are picked. Using counting back from 7: 6, 5. So 7 − 2 = 5 tomatoes remain.
Example 3
Fill in the blank: 10 − __ = 6. Since 10 − 4 = 6, the missing number is 4.
Quick Recap
- Subtraction means taking some objects away from a group and finding what is left.
- The minus (−) sign shows that objects are being removed.
- Counting back from the bigger number is a quick way to subtract.
- Subtraction and addition are closely connected — if 5 + 3 = 8, then 8 − 3 = 5.
- Turning a farm or shopping situation into a subtraction sum is called writing a number story.
Common Mistakes to Avoid
- Subtracting the bigger number from the smaller one by mistake instead of the other way around.
- Confusing the minus sign with the plus sign when writing a number sentence.
- Losing count while counting backward, especially past tricky numbers.
- Forgetting what the question is actually asking — some word problems ask “how many are left” while others ask “how many more are needed”.
- Not double-checking the answer using addition, for example checking 9 − 4 = 5 by confirming 5 + 4 = 9.
Home Practice Tips
- Use real vegetables, fruits, or toys at home and physically remove some to show subtraction.
- Create simple farm-themed subtraction stories, such as “6 potatoes in a basket, 2 are cooked, how many are left?”
- Practise counting backward from 10 to 0 regularly.
- Ask the child to check a subtraction answer using addition.
- Play a quick oral quiz with subtraction facts within 10 during a car ride or mealtime.
Frequently Asked Questions
Q1. Why does the book use a vegetable farm story to teach subtraction?
A relatable, real-life context like a farm helps children picture objects being taken away and understand subtraction as a natural, everyday action.
Q2. What is the difference between counting back and counting on?
Counting back is used for subtraction, moving backward from the bigger number, while counting on is used for addition, moving forward from the bigger number.
Q3. How are addition and subtraction connected?
They are opposite operations — if adding two numbers gives a total, subtracting one of those numbers from the total gives back the other number.
Q4. How can I help my child avoid mixing up addition and subtraction word problems?
Read the question carefully together and ask whether objects are being joined together (addition) or taken away (subtraction) before writing the number sentence.
Q5. What subtraction facts should a Class 1 child know after this chapter?
Simple subtraction facts within 10, along with the ability to solve short word problems involving taking away.
Full walkthrough: Chapter 6 Solutions · Extra Questions.
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