Tricksy

Name: Tricksy
Rating: 0 (0 reviews)
Author: Hassan Taleb

教育

無料 · iPad対応

年齢

4+
歳
カテゴリ

教育
デベロッパ

Hassan Taleb
言語

EN
英語
サイズ

18.7
MB

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