Tricksy vs Sorokun

Tricksy is a universal app that allows you to solve many math operations in a simple way, by applying untraditional techniques. This app includes more than 60 lessons classified into these domains: Addition, subtraction, multiplication, division, percentage and power. These lessons are presented in levels, arranged from the easiest lesson to the most difficult one. Each of these lessons is explained in a simple and clear way; using steps supported by examples. Besides the lessons, tricksy includes some useful tools for calculation, in which students can benefit, and may apply them during their school domain. ~The included tricks are: ▸ Addition: • Adding two-digit numbers like ab + ba • Adding 2 fractions like 1/a + 1/b • Adding a sequence of odd numbers beginning by 1: 1 + 3 + 5 + … + 2n-1 • Adding a sequence of even numbers beginning by 2: 2 + 4 + 6 + … + 2n • Adding a sequence from 1 to any number and back to 1 again: 1 + 2 + 3 +…+ X +…+ 3 + 2 +1 • Adding a sequence of doubles: X + 2⋅X + 2²⋅X + 2³⋅X + ... + 2ⁿ⋅X ( Locked ) • ... ▸ Subtraction: • Subtracting two-digit numbers like ab − ba • Subtracting 2 fractions like 1/a − 1/b • Subtracting 2 fractions like c/a − c/b • Subtracting 2 fractions like (a − 1)/a − (b − 1)/b • Subtracting three-digit numbers like abc − cba ( Locked ) • Subtracting the squares of two numbers differing by 2: X² − (X−2)² ( Locked ) • ... ▸ Multiplication: • Any number × 5 • Two digit number × 11: ab × 11; a + b < 10 • Two digit number × 11: ab × 11; a + b ≥ 10 • Any number × 9 • The repeated #1s × the repeated #9s having the same # of digits: 111..1 × 999..9 • The repeated #1s × 12: 111..1 × 12 ( Locked ) • The repeated #1s × 13: 111..1 × 13 ( Locked ) • The repeated #1s × 14: 111..1 × 14 ( Locked ) • The repeated #1s × 15: 111..1 × 15 ( Locked ) • The repeated #1s × 16: 111..1 × 16 ( Locked ) • The repeated #1s × 17: 111..1 × 17 ( Locked ) • The repeated #1s × 18: 111..1 × 18 ( Locked ) • The repeated #1s × 19: 111..1 × 19 ( Locked ) • Consecutive decade ending in 5: a5 × b5; b = a + 1 ( Locked ) • Two 2-digit numbers with same 10s digit: ab × ac; b + c = 10 ( Locked ) • Two 2-digit numbers with same 10s digit: ab × ac; b + c ≠ 10 ( Locked ) • Two 2-digit numbers with same 1s digit: ab × cb; a + c = 10 ( Locked ) • Two 2-digit numbers with same 1s digit: ab × cb; a + c ≠ 10 ( Locked ) ▸ Division: • Any number ÷ 5 • Any number ÷ 50 • Any number ÷ 25 • Any number ÷ 250 • Any number ÷ 125 • Repeating 3-digit number ÷ 37: aaa ÷ 37 • Any number ÷ 40 ( Locked ) • Any number ÷ 15 ( Locked ) • Any number ÷ 35 ( Locked ) ▸ Percentage: • 50% of a number • 25% of a number • 20% of a number • 33.33...% (33⅓%) of a number • 5% of a number ( Locked ) • 2.5% (2½%) of a number ( Locked ) • 40% of a number ( Locked ) • 60% of a number ( Locked ) • 70% of a number ( Locked ) • 75% of a number ( Locked ) • 45% of a number ( Locked ) • 15% of a number ( Locked ) • ... ▸ Power: • Number made up of 1s: (111..1)² ; number of digits < 10 • Number made up of 3s: (333..3)² ( Locked ) • Number made up of 6s: (666..6)² ; 1 < number of digits ( Locked ) • Number made up of 9s: (999..9)² ; 1 < number of digits ( Locked ) • Two digit number beginning with 5: (5a)² ( Locked ) • Two digit number ending with 5: (a5)² ( Locked ) Challenge your brain to think efficiently while having fun with our smart math tricks ! -------------------------------------------- Follow Us on Facebook: TricksyApp & Twitter: @hassantaleb90

Main Events (総合種目) This section presents events found in abacus competitions and exams—addition/subtraction, multiplication, and division, along with their respective mental calculation counterparts—tailored to your proficiency level. You can enter your answers directly within the app. In "Practice Mode," you receive immediate feedback on whether your answers are correct or incorrect. "Exam Mode" imposes a time limit, and you cannot check your results until you submit your answers. The problems correspond to the grade levels defined by both the Zen-Shu-Ren and the Nisshu-Ren standards. Flash Anzan (フラッシュ暗算) Flash Anzan involves mentally adding up a rapid succession of numbers displayed on the screen. Two modes are available: "Exam Mode," where you challenge yourself based on specific grade levels, and "Free Mode," which allows you to freely customize the number of entries, number of digits, and display speed. Exam Mode supports the grade standards of both the Zenshuren and the Japan Flash Anzan Association. Dictation of Sums (読上算) This training involves mentally adding and subtracting numbers as they are read aloud. Problems are read using VOICEVOX speech synthesis, and you can select the character who reads them. Like Flash Mental Arithmetic, this feature offers both Exam Mode and Free Mode. In Exam Mode, you can take mock exams based on the Zenshuren's standards. In Free Mode, you can customize the number of entries, the digit range, and the reading speed, as well as choose whether to include only addition or both addition and subtraction.