20/20 Linear Inequalities
The tutor in your pocket.
HK$ 8.00
6.1for iPhone, iPad
Age Rating
20/20 Linear Inequalities 螢幕截圖
About 20/20 Linear Inequalities
A power learning aid combines Coaching Calculators, Practice and Guide to help students master linear inequalities.
The Coaching Calculators focus on one-step, two-step and multi-step linear inequalities as well as those containing parentheses, decimals and fractions :
one-step : x − 2 ≤ 3 , x/7 ≥ 2
two-step : 3x + 8 ≤ 20, 2 ≥ 5 − 6x
multi-step : 4 + 9x ≥ 2x − 18
parentheses : 2(3 − 4x) ≤ 2x + 9
decimals : 0.25x + 1.5 = 9.9 − 0.2x
fractions : (1/2)x − 5 ≥ 3x + 1/5
Practice focuses on all of the above as well as harder inequalities with parentheses and fractions :
10 − 3(2 − 3(x + 5)) = 2x + 9
(1/2)(2x − 5) ≥ 3x + 3/4
Students learn quickly as they work with Coaching Calculators and Practice to review each step of the solving process.
The Guide includes step-by-step worked examples that highlight key differences between solving linear inequalities and solving linear equations.
The Coaching Calculators focus on one-step, two-step and multi-step linear inequalities as well as those containing parentheses, decimals and fractions :
one-step : x − 2 ≤ 3 , x/7 ≥ 2
two-step : 3x + 8 ≤ 20, 2 ≥ 5 − 6x
multi-step : 4 + 9x ≥ 2x − 18
parentheses : 2(3 − 4x) ≤ 2x + 9
decimals : 0.25x + 1.5 = 9.9 − 0.2x
fractions : (1/2)x − 5 ≥ 3x + 1/5
Practice focuses on all of the above as well as harder inequalities with parentheses and fractions :
10 − 3(2 − 3(x + 5)) = 2x + 9
(1/2)(2x − 5) ≥ 3x + 3/4
Students learn quickly as they work with Coaching Calculators and Practice to review each step of the solving process.
The Guide includes step-by-step worked examples that highlight key differences between solving linear inequalities and solving linear equations.
Show More
最新版本6.1更新日誌
Last updated on 2024年04月08日
歷史版本
This version contains minor bug fixes.
Show More
Version History
6.1
2024年04月08日
This version contains minor bug fixes.
6.0
2024年03月28日
iOS 17 compatibility and minor bug fixes.
5.9
2022年12月11日
This version has minor bug fixes.
5.8
2022年09月02日
This version contains minor bug fixes and enhancements.
5.7
2021年10月23日
iOS 15 compatibility and user interface improvements. Minor bug fixes.
5.6
2021年04月04日
Minor bug fixes and general improvements.
5.5
2021年02月17日
Minor bug squashed in fraction module.
5.4
2021年02月16日
Now includes inequalities containing decimals. Minor bug fixes.
5.3
2021年02月08日
Minor bug fixes in practice modules.
5.2
2021年02月06日
New coaching calculators for inequalities containing parentheses and inequalities containing fractions.
5.1
2020年03月22日
Minor bug fixes.
5.0
2020年03月19日
Enhanced practice module for linear inequalities with fractions and parentheses. Minor bug fixes.
4.9
2020年03月05日
New linear inequalities with fractions practice. Minor bug fixes.
4.8
2020年02月22日
New linear inequality practice unit. Minor bug fixes.
4.7
2020年01月22日
Minor bug fixes and enhancements.
4.6
2020年01月11日
Minor bug fixes and app streamlining. An accompanying module is moving to a free app for you to GET if you wish.
4.5
2019年10月05日
New transpose option for linear inequalities and equations. Minor bug fixes.
4.4
2019年09月19日
iOS 13 and iPadOS compatibility.
4.3
2019年01月20日
Major revision with streamlined user interface. Minor bug fixes.
4.2
2018年09月25日
Universal iPhone and iPad app. iOS 12 compatibility.
4.1
2017年11月01日
iPhone X and iOS 11 optimization and minor bug fixes.
4.0
2016年09月16日
iOS 10 compatibility and bug fixes.
3.1
2015年09月24日
iOS 9 compatibility and bug fixes.
3.0
2015年04月14日
Improved Guides for iPhone 6 and iPhone 6 Plus and minor bug fixes.
2.0
2013年09月26日
iOS 7 version.
20/20 Linear Inequalities FAQ
點擊此處瞭解如何在受限國家或地區下載20/20 Linear Inequalities。
以下為20/20 Linear Inequalities的最低配置要求。
iPhone
須使用 iOS 16.0 或以上版本。
iPad
須使用 iPadOS 16.0 或以上版本。
20/20 Linear Inequalities支持英文
