Doubles & Near Doubles

A doubles-based strategy for addition facts.

💡 Each row shows a double. Use Highest double to change how far the staircase goes.

Start with

So…

TRY THESE PROBLEMS

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Addend 1

Addend 2

Use numbers 1–20.

📖 Teacher note: Doubles are the easiest sums to memorize — once students chant them automatically, they unlock a powerful strategy. Start with Explore Doubles so the pairs become familiar. Move to Practice Near Doubles to show how 6 + 7 is just 6 + 6 plus one more. Breaking apart the larger number is the move that makes mental math feel achievable.

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More teacher tools: Back to all teacher tools · Place Value Exploder · Make 10 Strategy · Number Line Jumps · Number Bonds