Make ten to add

Making ten to add means decomposing one addend so that part combines with the other addend to form 10, then adding the remainder—for example, 8 + 5 = 8 + 2 + 3 = 10 + 3 = 13. This strategy applies to addition facts with sums within 20 and can be represented with ten-frames, equations, or jumps on a number line; it emphasizes that decomposing an addend preserves the total and builds a foundation for place-value strategies, without extending to larger multi-digit numbers or generalized algebraic methods.

Detailed Explanation: Make ten to add

To make ten, split one addend so that part joins the other addend to make $10$ .

Example: $8+5$

Ask: “How many more does $8$ need to make $10$ ?”
$8$ needs $2$ .
Split $5$ into $2$ and $3$ :

5=2+3

Add the $2$ to $8$ to make $10$ :

8+5=8+2+3

Add the rest:

10+3=13

So,

8+5=13.

Learn by doing: Make ten to add

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Ten Groups - Add, With Carry, Less than 20

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Make ten to add

Detailed Explanation: Make ten to add

Learn by doing: Make ten to add

Practice with unlimited practice problems

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Ten Groups - Add, With Carry, Less than 20