65 x 10 equals 650. When multiplying a number by 10, you simply add a zero to the end of the number. This is because multiplying by 10 is equivalent to shifting the decimal point one place to the right in the original number.
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5% of 65,000,000= 5% * 65000000= 0.05 * 65000000= 3,250,000
1 x 130, 2 x 65, 5 x 26, 10 x 13, 13 x 10, 26 x 5, 65 x 2, 130 x 1 = 130
The best way to answer from what I can think of is by the factors. So here they are: 130 = 1 x 130, 2 x 65, 5 x 26, or 10 x 13. Factors of 130: 1, 2, 5, 10, 13, 26, 65, 130
20% of 65 is 15. The calculation is 65/100 x 20 => 1 zero of 100 cancels the zero in 20. that leaves us with 65/10 x 2 => 2 and 10 will cancel off and it becomes 65/5 => 5 goes into 65=15 times.
6.5 x 10^7