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? X 0 And ? X 1 Multiplying by Zeros and Ones Anything times zero - is always zero. Click Here to Listen -- Once the audio clip starts, minimize it so you can see the words at the same time. Carol's Comments: Okay, this one is so simple it seems useless. But trust me, these two rules come in very handy as Algebra grows more complex. And sometimes, the very youngest child really struggles with these two multiplication facts. So it's useful at that level too. |
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