| 09/27/2012 3:36 pm |
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 OFFLINE | 8 times even number
Rules:
a. Write half of the even multiplier down.
b. Triple the multiplier and put it behind the number at step (a).
Examples:
8 x 2; Half of 2 is 1. Triple of 2 is 6. Put 1 and 6 together to form 16. This is your product.
8 x 4; Half of 4 is 2. Triple of 4 is 12. Put 2 and 12 together to form 212. Theses are 3-digits. Add the first 2-digits and retained the last digit. Hence 212 gives 32 as the right answer.
8 x 6; Half of 6 is 3. Triple of 6 is 18. Put 3 and 18 together to form 318. Add the first 2-digits and maintain the last digit. Hence 318 gives 48 as the correct product of 8 x 6.
Rules:
a. Write half of the multiplier down and ignore the decimal point.
b. Triple the multiplier and add it to the number at step (a). This forms your answer.
Examples:
8 x 1; Half of 1 is 0.5. Ignore the decimal point to get 5. Triple of 1 is 3.
Hence 5 + 3 = 8.
8 x 3; Half of 3 is 1.5. Ignore the decimal point to get 15. Triple of 3 is 9.
Hence 15 + 9 = 24.
8 x 17; Half of 17 is 8.5. Ignore the decimal point to get 85. Triple of 17 is 51.
Hence 85 + 51 = 136.
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