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Addition Strategies by Making Ten
Let's find the number which should be added to 6 to make a 10.
6 + ? = 10
To find the required addend, let’s consider a model with 10 blocks and fill it with 6 balls.
Here, notice that we need four more balls to fill all the 10 blocks.
6 + 4 = 10
So, the required addend is 4.
