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56 x 10 = 560
33 = (3 x 10) + (3 x 1) 56 = (5 x 10) + (6 x 1)
Well, here's how I would do it: 1. 56 x 10 = 560 2. 560 x 5 =2800 3. 56 x 6 = 336 4. 2800 + 336 = 3136 (answer to 56 x 56, or 562) 5. 3136 x 10 = 31,360 6. 31,360 x 5 = 156,800 7. 3136 x 6 = 18,816 8. 156,800 + 18,816 = 175,616 (answer to 56 x 56 x 56, or 562 x 56, or 563) (Yes, I did this in my head all the way through, and the answer is correct)
-10 x - 7 - 14 = +70 - 14 = +56
56,000,000,000 or 56 x 10^9 or 5.6 x 10^10