NCERT Solutions for Class 5th Maths Chapter 4 We the Travellers—II
Updated on 2026-09-19
About this chapter
Adding with place value. Write ones under ones, tens under tens, hundreds under hundreds. Add one column at a time, starting from the ones. If a column gives 10 or more, keep the ones digit there and carry the ten to the next column. Example: 28 + 75. Ones: 8 + 5 = 13, so write 3 and carry 1. Tens: 2 + 7 + 1 = 10, so write 0 and carry 1. Hundreds: 1. Answer 103. Subtracting with place value. Same columns, but now you may have to regroup — break 1 ten into 10 ones, or 1 hundred into 10 tens. Example: 65 − 18. Ones: 5 is smaller than 8, so take 1 ten from 6 tens. Now the ones are 15 and the tens are 5. 15 − 8 = 7. Tens: 5 − 1 = 4. Answer 47. Addition and subtraction are two sides of one fact. If 46 + 21 = 67, then 67 − 21 = 46 and 67 − 46 = 21. This is why you can always check a subtraction
- Making Sums Equal
- Fuel Arithmetic
- Relationship Between Addition and Subtraction
- More Fuel Arithmetic
- Sums of Consecutive Numbers
- The Longest Land Route
- Subtracting Large Numbers
- Quick Sums and Differences
- Let Us Think and Solve
- Even and Odd Numbers
Quick revision
| Word or idea | What it means | Where it appears | Example |
|---|---|---|---|
| Place value | The value a digit has because of its position — ones, tens, hundreds, thousands | Fuel Arithmetic, p. 43 | In 3,717 the 7 on the left stands for 700 |
| Regroup (carry) | Change 10 ones into 1 ten, or 10 tens into 1 hundred, and move it to the next column | Fuel Arithmetic, p. 43 | 8 + 5 = 13 → write 3, carry 1 ten |
| Regroup (borrow) | Break 1 ten into 10 ones, or 1 hundred into 10 tens, so you can subtract | More Fuel Arithmetic, p. 44 | 65 − 18: 6 tens 5 ones → 5 tens 15 ones |
| Sum | The answer you get after adding | Making Sums Equal, p. 42 | 1 + 2 + 7 + 9 = 19 |
| Difference | The answer you get after subtracting | Let Us Solve, p. 45 | 82 − 37 = 45 |
| Checking by the other operation | Add your answer back to see if you return to the start | More Fuel Arithmetic, p. 44 | 65 − 18 = 47, and 18 + 47 = 65 |
| Consecutive numbers | Numbers that follow one after another with nothing skipped | Sums of Consecutive Numbers, p. 45 | 29, 30, 31, 32 |
| Successive sums | Sums that come one after the other in the same box | Sums of Consecutive Numbers, p. 45 | 6, 9, 12, 15 — each 3 more than the one before |
| Even number | A number that splits into pairs with nothing left over | Even and Odd Numbers, p. 54 | 18 = 9 pairs |
| Odd number | A number that leaves one counter alone when you make pairs | Even and Odd Numbers, p. 54 | 23 = 11 pairs and 1 left over |
| Palindrome number | A number that reads the same from left to right and right to left | Let Us Think and Solve, p. 53 | 8,558 and 121 |
| Increasing / decreasing order | Going up (small to big) / going down (big to small) | Let Us Think and Solve, p. 53 | 1, 2, 3 is increasing; 9, 8, 7 is decreasing |
| Estimate | A quick, near-enough answer found with rounded numbers | Let Us Solve, p. 51 | 39,785 + 9,545 + 19,548 is about 70,000 |
Exercises
- Making Sums Equal — Making Sums Equal Page 42
- Fuel Arithmetic — Fuel Arithmetic Page 43
- Fuel Arithmetic — Let Us Solve Page 43
- Relationship Between Addition and Subtraction — Relationship Between Addition and Subtraction Page 44
- More Fuel Arithmetic — More Fuel Arithmetic Page 44
- More Fuel Arithmetic — Let Us Solve Page 45
- Sums of Consecutive Numbers — Sums of Consecutive Numbers Page 45
- Sums of Consecutive Numbers — In-text Questions Page 46
- The Longest Land Route — The Longest Land Route — Adding Large Numbers Page 46–47
- The Longest Land Route — Let Us Solve Page 48
- Subtracting Large Numbers — Subtracting Large Numbers Page 49–50
- Subtracting Large Numbers — Let Us Solve Page 50–51
- Quick Sums and Differences — Quick Sums and Differences Page 51–52
- Let Us Think and Solve — Let Us Think and Solve Page 53
- Even and Odd Numbers — Even and Odd Numbers Page 54
- Let Us Think — Let Us Think Page 54–55
- Math Metric Mela — Math Metric Mela Page 56
- Math Metric Mela — Let Us Do Page 56