Detailed Explanation of Subtracting Two-Digit Numbers with Regrouping 🧮

When you subtract two-digit numbers with regrouping, it means you need to borrow ten from the tens column because the ones number you want to take away is bigger than the ones number you have. This is a skill that Year 2 students learn in Maths to help them with tricky subtraction problems.

Step-by-Step Instructions for Subtracting Two-Digit Numbers with Regrouping ✏️

  1. Look at the ones column first. Check if the top number in the ones place (right side) is smaller than the number you want to take away.
  2. If the top number is smaller, you need to regroup. That means you borrow 1 ten (which is 10 ones) from the tens column on the left.
  3. Take one ten away from the tens column number. Decrease it by 1.
  4. Add 10 ones to the top number in the ones column. Now you have enough ones to subtract.
  5. Subtract the ones column numbers. Take the bottom ones number away from the new bigger ones number on top.
  6. Subtract the tens column numbers. Take the bottom tens number away from the new tens number (after borrowing).
  7. Write down your answer. You have now completed the subtraction with regrouping.

Example: 43 – 28 🔢

  • Ones column: 3 – 8 (3 is less than 8, so we need to regroup!)
  • Borrow 1 ten from the 4 tens. Now 4 tens becomes 3 tens.
  • Add 10 ones to 3 ones, making it 13 ones.
  • Subtract the ones: 13 – 8 = 5
  • Subtract the tens: 3 – 2 = 1
  • The answer is 15.

Tips to Help You With Subtracting Two-Digit Numbers ✅

  • Always start subtracting from the ones column.
  • Remember, regrouping means taking 1 ten from the tens and adding 10 ones to the ones.
  • Use your fingers or draw dots to help you count if you get stuck.
  • Practice with different numbers to get more confident.
  • Ask yourself: “Do I need to regroup?” If yes, follow the steps carefully.

Keep practising, and soon subtracting two-digit numbers with regrouping will feel easy! 🎉

20 Examination-Style Questions with Answers on Subtracting Two-Digit Numbers with Regrouping for Year 2 📝

Here are 20 practice questions on subtracting two-digit numbers with regrouping. These questions will help Year 2 children improve their skills in taking away numbers where borrowing is needed. Each question is followed by the correct answer, so you can check your work as you go!

Subtract Two-Digit Numbers with Regrouping Questions ➖

  1. 54 − 27 = ___
  2. 63 − 48 = ___
  3. 71 − 36 = ___
  4. 82 − 49 = ___
  5. 95 − 57 = ___
  6. 44 − 29 = ___
  7. 76 − 38 = ___
  8. 53 − 25 = ___
  9. 60 − 47 = ___
  10. 89 − 58 = ___
  11. 68 − 39 = ___
  12. 77 − 46 = ___
  13. 92 − 35 = ___
  14. 85 − 69 = ___
  15. 74 − 28 = ___
  16. 61 − 44 = ___
  17. 88 − 59 = ___
  18. 79 − 56 = ___
  19. 55 − 38 = ___
  20. 90 − 73 = ___

Answers with Clear Steps ✔️

  1. 54 − 27 = 27
    (Borrow 1 ten: 14 – 7 = 7; 4 tens left: 4 – 2 = 2; answer is 27)
  2. 63 − 48 = 15
  3. 71 − 36 = 35
  4. 82 − 49 = 33
  5. 95 − 57 = 38
  6. 44 − 29 = 15
  7. 76 − 38 = 38
  8. 53 − 25 = 28
  9. 60 − 47 = 13
  10. 89 − 58 = 31
  11. 68 − 39 = 29
  12. 77 − 46 = 31
  13. 92 − 35 = 57
  14. 85 − 69 = 16
  15. 74 − 28 = 46
  16. 61 − 44 = 17
  17. 88 − 59 = 29
  18. 79 − 56 = 23
  19. 55 − 38 = 17
  20. 90 − 73 = 17

Remember, when you subtract two-digit numbers with regrouping, you look at the ones first. If the top number’s ones are smaller, you borrow a ten from the tens place. Then you subtract the ones and tens separately. Keep practising these questions to get better at subtracting with regrouping! 💪