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## Multiplying A Repeating 4s Number By 44

 Multiplying A Repeating 4s Number By 44Multiplying a repeating 4's number by 44 Choose a repeating 4's number (444, etc.) Multiply it by 44 The product is: - first two digits are 19 - next digits are repeating 5's - two fewer than the repeating 4's in the original number - last two digits are 36.    Example: If the first number is 444444: Multiply by 44. The product is: first two digits are 19: 19. next repeating digits are repeating 5's, two fewer than the repeating 4's in the original number: 5555. last two digits are 36: 36. So 444444 × 44 = 19555536.    See the pattern? If the first number is 444444444: Multiply by 44. The product is: first two digits are 19: 19. next repeating digits are 5's, two fewer than the repeating 4's in the original number: 5555555. last two digits are 36: 36. So 444444444 × 44 = 19555555536. Big products like these will overwhelm your friend's normal calculator. Easy win for mental math answers here.

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26 Sep, 2021, 02:04:10 AM