Chapter 6 of 13
⬅️ Ch 5: How Many? Ch 7: Lina's Family ➡️
NCERT Class 1 Mathematics • New NEP 2020 / NCF-FS

Chapter 6: Vegetable Farm

Addition & Subtraction within 20, Double Ten-Frames & Word Problems | CBSE Session 2026–27

Core Pedagogical Competencies & Concepts
  • Extending addition and subtraction to teen numbers (10 to 20).
  • Using double ten-frames to bridge 10 and add single digits.
  • Partitioning numbers: 14 = 10 + 4, 17 = 10 + 7.
  • Real-life harvest and market word problems with vegetables.
Full Frame: 10410 + 4 = 14 Vegetables Harvested

All Textbook Exercises & In-Text Tasks (18 Questions)

100% Complete Ingestion
Q1 Textbook Exercise • Carrot Harvest Addition
Rani pulls 9 carrots from the first garden patch and 4 carrots from the second patch. How many carrots did Rani pull altogether?
[2 Marks]
✅ Step-by-Step Solution & Working
Step-by-Step Solution:
1. First patch = 9 carrots
2. Second patch = 4 carrots
3. 9 + 4 = 9 + 1 + 3 = 10 + 3 = 13 carrots.
CBSE Step-by-Step Marking Scheme
Making 10 strategy (9+1+3) 1 M
Answer: 13 carrots 1 M
Q2 Textbook Exercise • Pumpkin Subtraction
There were 15 pumpkins lying in the farm shed. 4 pumpkins were loaded onto a wooden cart. How many pumpkins remain in the shed?
[2 Marks]
✅ Step-by-Step Solution & Working
Step-by-Step Solution:
1. Total pumpkins = 15
2. Loaded pumpkins = 4
3. Pumpkins remaining = 15 - 4 = 11 pumpkins.
CBSE Step-by-Step Marking Scheme
15 - 4 = 11 1 M
Answer with unit: 11 pumpkins 1 M
Q3 Let Us Do • Double Ten-Frame Counting
One ten-frame is completely full (10 dots), and the second ten-frame has 6 dots. What total number do they represent?
[2 Marks]
✅ Step-by-Step Solution & Working
Step-by-Step Solution:
• Full ten-frame = 10
• Second frame = 6
• Total = 10 + 6 = 16 (Sixteen).
CBSE Step-by-Step Marking Scheme
10 + 6 = 16 1 M
Number name Sixteen 1 M
Q4 Textbook Exercise • Adding to 10
Solve:
(a) 10 + 3 = __
(b) 10 + 7 = __
(c) 10 + 9 = __
(d) 10 + 5 = __
[2 Marks]
✅ Step-by-Step Solution & Working
Step-by-Step Solution:
• (a) 10 + 3 = 13
• (b) 10 + 7 = 17
• (c) 10 + 9 = 19
• (d) 10 + 5 = 15
CBSE Step-by-Step Marking Scheme
All 4 sums evaluated correctly 2 M
Q5 Textbook Exercise • Subtracting from Teen Numbers
Solve:
(a) 14 - 4 = __
(b) 18 - 8 = __
(c) 17 - 10 = __
(d) 12 - 2 = __
[2 Marks]
✅ Step-by-Step Solution & Working
Step-by-Step Solution:
• (a) 14 - 4 = 10
• (b) 18 - 8 = 10
• (c) 17 - 10 = 7
• (d) 12 - 2 = 10
CBSE Step-by-Step Marking Scheme
All 4 differences evaluated correctly 2 M
Q6 Word Problem • Tomatoes in Baskets
Simran's basket has 11 red tomatoes. Her brother adds 5 green tomatoes to the basket. How many tomatoes are in the basket now?
[2 Marks]
✅ Step-by-Step Solution & Working
Step-by-Step Solution:
• Red tomatoes = 11
• Green tomatoes = 5
• Total = 11 + 5 = 16 tomatoes.
CBSE Step-by-Step Marking Scheme
11 + 5 = 16 1 M
Answer: 16 tomatoes 1 M
Q7 Word Problem • Cucumbers Sold
Farmer Hari had 16 cucumbers. He sold 6 cucumbers to a customer. How many cucumbers does he have left?
[2 Marks]
✅ Step-by-Step Solution & Working
Step-by-Step Solution:
• Total cucumbers = 16
• Cucumbers sold = 6
• Cucumbers left = 16 - 6 = 10 cucumbers.
CBSE Step-by-Step Marking Scheme
16 - 6 = 10 1 M
Answer: 10 cucumbers 1 M
Q8 Let Us Think • Number Line Jump within 20
Start at 12 on the number line. Jump forward by 5 steps. Where do you land?
[2 Marks]
✅ Step-by-Step Solution & Working
Step-by-Step Solution:
• Starting point = 12
• Steps forward = 5
• 12 + 5 = 17.
CBSE Step-by-Step Marking Scheme
12 + 5 = 17 1 M
Correct destination on number line 1 M
Q9 Let Us Think • Number Line Backward Jump
Start at 19 on the number line. Jump backward by 4 steps. Where do you land?
[2 Marks]
✅ Step-by-Step Solution & Working
Step-by-Step Solution:
• Starting point = 19
• Steps backward = 4
• 19 - 4 = 15.
CBSE Step-by-Step Marking Scheme
19 - 4 = 15 1 M
Correct destination on number line 1 M
Q10 Textbook Exercise • Adding Doubles
Find the double sum: (a) 5 + 5 = __, (b) 6 + 6 = __, (c) 7 + 7 = __.
[3 Marks]
✅ Step-by-Step Solution & Working
Step-by-Step Solution:
• (a) 5 + 5 = 10
• (b) 6 + 6 = 12
• (c) 7 + 7 = 14
CBSE Step-by-Step Marking Scheme
5+5 = 10 1 M
6+6 = 12 1 M
7+7 = 14 1 M
Q11 Textbook Exercise • Making 10 to Add
How do you add 8 + 5 using the 'Make 10' strategy?
[2 Marks]
✅ Step-by-Step Solution & Working
Step-by-Step Solution:
1. 8 needs 2 to make 10.
2. Break 5 into 2 + 3.
3. 8 + 2 = 10.
4. 10 + 3 = 13.
CBSE Step-by-Step Marking Scheme
Break 5 into 2 + 3 1 M
10 + 3 = 13 1 M
Q12 Textbook Exercise • Subtracting from 20
A crate had 20 cabbages. The cook used 8 cabbages to make dinner. How many cabbages remain in the crate?
[2 Marks]
✅ Step-by-Step Solution & Working
Step-by-Step Solution:
• Initial cabbages = 20
• Cabbages used = 8
• Remaining = 20 - 8 = 12 cabbages.
CBSE Step-by-Step Marking Scheme
20 - 8 = 12 1 M
Answer with unit: 12 cabbages 1 M
Q13 Let Us Do • Tens and Ones Deconstruction
Break these numbers into Tens and Ones: (a) 15, (b) 19, (c) 11.
[2 Marks]
✅ Step-by-Step Solution & Working
Step-by-Step Solution:
• (a) 15 = 1 Ten and 5 Ones
• (b) 19 = 1 Ten and 9 Ones
• (c) 11 = 1 Ten and 1 One
CBSE Step-by-Step Marking Scheme
All 3 broken down correctly 2 M
Q14 Mental Math • Missing Number in Equation
Fill the blank: 13 + __ = 18.
[2 Marks]
✅ Step-by-Step Solution & Working
Step-by-Step Solution:
• 18 - 13 = 5.
• 13 + 5 = 18.
CBSE Step-by-Step Marking Scheme
Identified 5 2 M
Q15 Mental Math • Subtraction Balance
Fill the blank: 17 - __ = 11.
[2 Marks]
✅ Step-by-Step Solution & Working
Step-by-Step Solution:
• 17 - 11 = 6.
• 17 - 6 = 11.
CBSE Step-by-Step Marking Scheme
Identified 6 2 M
Q16 Activity • Match Expression to Answer
Match: (1) 9 + 9, (2) 15 - 3, (3) 8 + 6.
Answers: [12, 14, 18].
[2 Marks]
✅ Step-by-Step Solution & Working
Step-by-Step Solution:
• (1) 9 + 9 = 18
• (2) 15 - 3 = 12
• (3) 8 + 6 = 14
CBSE Step-by-Step Marking Scheme
All 3 correctly matched 2 M
Q17 Word Problem • Radishes and Turnips
Grandmother harvested 7 white radishes and 8 purple turnips. How many root vegetables did she harvest in all?
[2 Marks]
✅ Step-by-Step Solution & Working
Step-by-Step Solution:
• Radishes = 7
• Turnips = 8
• Total = 7 + 8 = 15 root vegetables.
CBSE Step-by-Step Marking Scheme
7 + 8 = 15 1 M
Answer: 15 vegetables 1 M
Q18 Competency Review • Comparing Differences
Which gives a greater answer: (16 - 4) or (11 + 2)?
[2 Marks]
✅ Step-by-Step Solution & Working
Step-by-Step Solution:
• 16 - 4 = 12.
• 11 + 2 = 13.
• Comparing: 13 > 12.
• (11 + 2) gives the greater answer.
CBSE Step-by-Step Marking Scheme
Calculated 12 and 13 1 M
(11 + 2) is greater 1 M
🌟 NEP 2020 Competency-Based Case Study

Vegetable Basket Distribution Case Study

Farmer Kalu harvests 12 orange carrots and 6 red radishes from his organic garden beds. He puts them into a large jute sack.

Analytical Task: How many total vegetables did Farmer Kalu harvest? If he sells 5 carrots at the morning market, how many carrots remain?
Evaluation & Model Answer:
1. Total vegetables harvested = 12 + 6 = 18 vegetables.
2. Carrots remaining = 12 - 5 = 7 carrots left.
Rubric: 1.5 M for 12 + 6 = 18 vegetables + 1.5 M for 12 - 5 = 7 carrots
⬅️ Ch 5: How Many? Ch 7: Lina's Family ➡️