Smart Percent Tax Calculator - Lumos Educational App Store

Smart Calculator It is a general purpose calculator to compute percent tax, profit, loss and discount. It is also good for student to cross check answer for a common equation to compute area, volume and other units and equations by hand. Sales Calculator Tax Calculator Percent Calculator Profit Calculator Discount Calculator Memory: M+ add to memory M- subtract from memory MC clear memory MR recall from memory Operator Precedence: Highest: ( ) (parenthesis) Higher : ^ (power) High: (multiply), / (division), mod (remainder) Low: + (plus), - (minus) Equation and Result display Equation: 3x(4+5)-6^2+9/3 Tap: = Result: -6 Equation become: 3x(4+5)-6^2+9/3 = -6 Tap: 2 x Pi x 10 Equation: 2x3.14x10 Tap: =  Result: 62.80 Equation: 2x3.14x10 = 62.80 AC: Clear equation and result to 0 Pi: 3.14 Percent Calculation Enter % for calculation, e.g 7% Enter number, e.g. 500 Equation: 500 Tap M+ to store number (500) in memory. Tap % button (compute 7% of 500) Result: 35 (500 7%) Tap AC to reset equation and result to 0. Tap MR button (memory recall) Equation: 500 Tap +% button (compute 500 + 7% of 500) Result: 535 (500+500 7%) Tap AC to reset equation and result to 0. Tap MR button (memory recall) Equation: 500 Tap -% button (compute 500 - 7% of 500) Result: 465 (500-500 7%) Tap AC to reset equation and result to 0. Tap MR button (memory recall) Equation: 500 Tap -vat button (computer value without tax, remove tax from 500) Result: 467.29 (500 100/(7+100)) in other word: 467.29+467.29 7% = 500 Power of number: compute x^y equation: 2^16 result: 65536 Discount: total price 1250 and discount 15%, find discount price. enter percent: 15 equation: 1250 tap: -% result: 1062.5 Profit: capital 2000, profit 25%, find total return amount. enter percent: 25 equation: 2000 tap: +% result: 2500 Value without tax: total price 1250 include 7% tax find price without tax. enter percent: 7 equation: 1250 tap: -vat result: 1168.22 Mod: find the remainder of division equation: 50mod9 result: 5