JKBOSE Class 3rd Math Chapter 3 (Give and Take) complete solved exercises, mental math addition and subtraction strategies, textbook word problems, and notes according to the latest Jammu & Kashmir Board curriculum.
📌 Key Concepts
- 100-Chart Jumps: Adding and subtracting 10s by moving vertically up or down on a number grid.
- Mental Math Shortcuts: Breaking numbers into tens and ones (e.g., $37 + 22 = 30 + 7 + 20 + 2 = 50 + 9 = 59$).
- Word Problems: Real-life situations involving adding items (“giving”) and removing items (“taking away”).
- Addition with Regrouping (Carry-over): Solving 2-digit and 3-digit addition problems accurately.
Exercise Questions & Answers
Q1 Kittu’s Home – Jump on the 100-chart to find the answers:
1. 10 less than 34 is: 24 ($34 – 10 = 24$)
2. 53 – 20 = 33
3. 11 more than 31 is: 42 ($31 + 11 = 42$)
4. 11 less than 66 is: 55 ($66 – 11 = 55$)
5. 62 + 13 = 75
6. 23 less than 89 is: 66 ($89 – 23 = 66$)
7. 10 and 40 more is: 50 ($10 + 40 = 50$)
8. 9 added to 28 gives: 37 ($28 + 9 = 37$)
Q2 Add by breaking numbers into Tens and Ones:
• Example: $26 + 43$
Step 1: Break $26$ into $20 + 6$
Step 2: Break $43$ into $40 + 3$
Step 3: Add tens: $20 + 40 = 60$
Step 4: Add ones: $6 + 3 = 9$
Step 5: Total: $60 + 9 =$ 69
• Try this: $33 + 56 = (30 + 3) + (50 + 6) = (30 + 50) + (3 + 6) = 80 + 9 =$ 89
Q3 Word Problem (School Students Survey):
In a school, students like fruits as follows:
• Girls who like Oranges = 136, Girls who like Mangoes = 240
• Boys who like Oranges = 128, Boys who like Mangoes = 243
Questions:
1. How many students in the school like oranges?
Answer: $136 + 128 =$ 264 students
2. How many students in the school like mangoes?
Answer: $240 + 243 =$ 483 students
3. Altogether, how many students are there in the school?
Answer: $264 + 483 =$ 747 students
Q4 Practice Time – Add the following:
1. $345 + 52 = $ 397
2. $492 + 29 = $ 521
3. $245 + 93 = $ 338
4. $643 + 345 = $ 988
5. $750 + 219 = $ 969