Make sure you know the answers to these problems:
The ZERO Rule: Any number multiplied by zero is zero. EXAMPLES: 4 x 0 = 0 0 x 5 = 0 11 x 0 = 0 The ONE Rule: Any number multiplied by one is that number. EXAMPLES: 4 x 1 = 4 1 x 5 = 5 11 x 1 = 11
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