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A simple algorithm of (4.23 + 6.17) * 0.8
Original formula = 10.4 * 0.8 = 10 * 0.8 + 0.4 * 0.8
Find the law of numbers 4 4 5 6 7 8 10 12 14 17 21 25 30 36 find the following numbers and how to deduce the method
Tell me what the principle is
Write the number in one line, and write the difference between the two adjacent numbers in the middle of the two numbers in the next line, and a miracle will appear
4 4 5 6 7 8 10 12 14 17 21 25 30 36
+0 + 1 + 1 + 1 + 1 + 2 + 2 + 2 + 3 + 4 + 4 + 5 + 6 (same as the first line, + 7 + 8 + 10 + 12 + 14 + 17 + 21 + 25 + 30 + 36)
Simple calculation of 8 / 17-14 / 31 × 8 / 17 fractions
How to calculate 8 / 17-14 / 31 × 8 / 17 simply?
=8/17×（1-14/31）
=8/17×17/31
=8/31
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