# Math

Nadine has a chip board with 4 red chips. She needs to subtract 2 black chips, but there are no black chips on the board. Nadine says" It is impossible to subtract 2 black chips. There are none on the boars!" What can Nadine do to the chip bound so that she can subtract 2 black chips? Explain your reasoning.

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Nadie has a chip board with 4 red chips. She needs to subtract 2 black chips, but there are no black chips on the board. Nadie says, "it is impossible to subtract 2 black chips. There are none on the board "What can Nadine do to