NumihanaColumn addition.
Align equal place values and work from ones to the left. Ten units in one place become one unit in the next place. Include each incoming carry once.
When this helps
Useful for written calculations with several digits. An extra answer place may be needed.
A common slip
Keep the carried ten separate from the digit written in the current answer place.
Worked example
44 + 503 =
What digit goes in the ones answer place?
4 + 3 + incoming carry 0: write the units digit.
7What digit goes in the tens answer place?
4 + 0 + incoming carry 0: write the units digit.
4What digit goes in the hundreds answer place?
0 + 5 + incoming carry 0: write the units digit.
5What is the final answer?
Recombine your working and check it against the original question.
547
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Teaching context
This lesson practises mathematical representations and calculations. The displayed practice uses selected England Year 3 skills; the strategy can also help learners in other years.
Curriculum alignment describes the mathematical skill. It does not mean this is the only required teaching method.
Department for Education: mathematics programmes of study ↗Original method lesson v1.
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