Adding Large Numbers
💡 How to solve ▾
Add from the biggest place value down: thousands, then hundreds, then the rest. Keep one running total rather than stacking columns in your mind.
A worked example
3,480 + 2,610: thousands give 5,000, hundreds give 1,090, so the running total is 6,090.
Questions people ask
Left to right really beats right to left? ▾
For mental addition, yes. You get a close estimate immediately and only refine it, instead of holding carries until the very end.
How do I handle the carrying? ▾
When a place value overflows, fold the extra into the running total straight away rather than remembering a separate carry digit.