Numihana612 − 3 = — use a mental method.
Answer: ________________
LEARN, PRINT & PRACTISE
Mental subtraction of ones.
Mental subtraction of ones
Numihana · England Year 3
Mental subtraction of ones
Practice sheet
Name: ______________
Date: ______________
Mental subtraction of ones
487 − 0 = — use a mental method.
Answer: ________________
265 − 0 = — use a mental method.
Answer: ________________
619 − 5 = — use a mental method.
Answer: ________________
24 − 1 = — use a mental method.
Answer: ________________
788 − 7 = — use a mental method.
Answer: ________________
Numihana · England Year 3
Mental subtraction of ones
Answer key
Name: ______________
Date: ______________
Mental subtraction of ones
612 − 3 = — use a mental method.
Answer: 609
487 − 0 = — use a mental method.
Answer: 487
265 − 0 = — use a mental method.
Answer: 265
619 − 5 = — use a mental method.
Answer: 614
24 − 1 = — use a mental method.
Answer: 23
788 − 7 = — use a mental method.
Answer: 781
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The skill behind this activity
Mental subtraction of ones
Department for Education: mathematics programmes of study ↗
Year 3 → Number → Addition and subtraction · Selected statutory skill. Pack 2.2.0 · source checked 2026-10-12.
For teachers and parents
Change the requested ones, tens or hundreds place. Partition or count on/back, then undo the change to check.
A common slip
Changing tens means changing groups of ten, not ones.
Worked example
872 − 5 = — use a mental method.
Answer: 867
Change the requested ones, tens or hundreds place. Partition or count on/back, then undo the change to check.