8 times 8 = 64
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64 times 8 equals 512. This multiplication can be solved by adding 64 to itself 8 times, or by recognizing that multiplying by 8 is the same as doubling the number three times (64 doubled is 128, then 256, then 512). The product of 64 and 8 is a fundamental multiplication fact that can be memorized to improve mental math skills.
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It seems there may be a mistake in your question. 8x8 is actually 64, not 68. To remember this multiplication fact, you can break down 8x8 as 8 squared, which equals 64. This can be memorized through practice and repetition, as well as understanding the concept of multiplication as repeated addition.
1x34=34 2x17=34
1 x 64, 2 x 32, 4 x 16, 8 x 8.