Unlike the selected product name can these calculators also very good on the normal Kindle Fire (without HD) use. Kindle simply hold cross, then appear the extra buttons for trigonometric functions, root, exponent, reciprocal, PI, etc. Holding the Kindle upright, only the normal basic arithmetic operations can be seen. Unlike other, highly acclaimed here, free calculators, this represents point before line calculation. 3 + 4 * 2 gives here actually 11 and not 14. However, the "exponent-before-point" -Rechnung dominated not even this. 2 * 3 ^ 2 gives here so wrongly held 36 18th The graphics are appealing.