16-Let’s Add and Subtract by Breaking Down
The breaking down strategy is a key one for written calculation.
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8-Let’s Add by Breaking Down
The breaking down strategy is a key one for written calculation.
Let’s see ...
4-Let’s Subtract by Breaking Down
The breaking down strategy is a key one for written calculation.
Let’s see ...
3-Let’s Add by Breaking Down
The breaking down strategy is a key one for written calculation.
Let’s see ...
9-Let’s Subtract by Breaking Down
The breaking down strategy is a key one for written calculation.
Let’s see ...