Show Your Regrouping Working

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Part 1: Regroup and subtract

WALT: We are learning to regroup when subtracting a one-digit number from a two-digit number.

Read each question carefully. Show every step of your working. You may use drawings, place-value blocks or numbers to help you.

Dyslexia-friendly option: Read one question at a time, use a ruler to keep your place, or ask someone to read the question aloud.

1. Solve: 54 − 8 =

2. Solve: 73 − 6 =

3. Solve: 82 − 7 =

4. Solve: 91 − 8 =

5. Solve: 46 − 9 =

6. Solve: 63 − 7 =

Part 2: Show and explain your working

WALT: We are learning to explain how regrouping helps us subtract a one-digit number.

7. A library has 64 books. It lends 9 books. How many books are left? Show your regrouping working and write an answer sentence.

8. Sam says, “52 − 7 = 55.” Is Sam correct? Show your working, find the correct answer and explain the mistake.

Check your work: Does your answer make sense? Estimate first, then check your subtraction using addition.

Support idea: If you need help, draw tens and ones. You can exchange one ten for ten ones. Work with a partner and talk through each regrouping step.

Differentiation: Use place-value counters or a number line for support. Confident learners can explain why regrouping is needed and check their answer with addition.

Part 3: Extension challenge and answers

WALT: We are learning to apply regrouping to different two-digit subtraction problems and check our answers.

9. Extension: Solve 80 − 7. Show all your working, including how you regroup one ten into ten ones.

10. Extension: Write a subtraction problem with an answer of 34. Your two-digit minuend and one-digit subtrahend must require regrouping. Solve it and show your working.