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NCERT Solutions for Class 5th Maths Chapter 4 More Fuel Arithmetic — Let Us Solve

Book page 45 Updated on2026-09-19

Q1.
What is the difference between 82 and 37? Check your answer. Is 37 + ____ = 82?
Answer

The difference is 45.

The word difference means how much bigger one number is than the other. So we subtract the smaller from the bigger.

82 − 37
  1. Ones: 2 is smaller than 7. Regroup — take 1 ten from the 8 tens and break it into 10 ones.
  2. The tens are now 7 and the ones are 2 + 10 = 12.
  3. Ones: 12 − 7 = 5.
  4. Tens: 7 − 3 = 4.
TO
7 (was 8)12 (was 2)
− 37
45
82 − 37 = 45

Check: 37 + 45 = 82.

  1. Ones: 7 + 5 = 12. Write 2, carry 1 ten.
  2. Tens: 3 + 4 + 1 = 8.
  3. That gives 82 ✓
Q2.
57 – 11 = ___
Answer

46

  1. Ones: 7 − 1 = 6. No regrouping is needed.
  2. Tens: 5 − 1 = 4.
57 − 11 = 46
Check: 11 + 46 = 57 ✓
Q3.
23 – 19 = ___
Answer

4

  1. Ones: 3 is smaller than 9, so regroup. Take 1 ten from the 2 tens.
  2. The tens are now 1 and the ones are 13.
  3. Ones: 13 − 9 = 4.
  4. Tens: 1 − 1 = 0.
23 − 19 = 4
Easier way: 19 is 1 less than 20. 23 − 20 = 3, then put the 1 back: 3 + 1 = 4. Same answer. Check: 19 + 4 = 23 ✓
Q4.
49 – 21 = ___
Answer

28

  1. Ones: 9 − 1 = 8.
  2. Tens: 4 − 2 = 2.
49 − 21 = 28
Check: 21 + 28 = 49 ✓
Q5.
56 – 18 = ___
Answer

38

  1. Ones: 6 is smaller than 8, so regroup. Take 1 ten from the 5 tens.
  2. The tens are now 4 and the ones are 16.
  3. Ones: 16 − 8 = 8.
  4. Tens: 4 − 1 = 3.
56 − 18 = 38
Check: 18 + 38 = 56 ✓
Q6.
93 – 35 = ___
Answer

58

  1. Ones: 3 is smaller than 5, so regroup. Take 1 ten from the 9 tens.
  2. The tens are now 8 and the ones are 13.
  3. Ones: 13 − 5 = 8.
  4. Tens: 8 − 3 = 5.
93 − 35 = 58
Check: 35 + 58 = 93 ✓
Q7.
84 – 23 = ___
Answer

61

  1. Ones: 4 − 3 = 1.
  2. Tens: 8 − 2 = 6.
84 − 23 = 61
Check: 23 + 61 = 84 ✓
Q8.
70 – 43 = ___
Answer

27

  1. Ones: 0 is smaller than 3, so regroup. Take 1 ten from the 7 tens.
  2. The tens are now 6 and the ones are 10.
  3. Ones: 10 − 3 = 7.
  4. Tens: 6 − 4 = 2.
70 − 43 = 27
Check: 43 + 27 = 70 ✓
Q9.
65 – 47 = ___
Answer

18

  1. Ones: 5 is smaller than 7, so regroup. Take 1 ten from the 6 tens.
  2. The tens are now 5 and the ones are 15.
  3. Ones: 15 − 7 = 8.
  4. Tens: 5 − 4 = 1.
65 − 47 = 18
Check: 47 + 18 = 65 ✓
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