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Mathematricks HD

價格:免費

更新日期:2015-01-19

檔案大小:17.8 MB

目前版本:2.1

版本需求:需要 iOS 6.0 或以上版本。與 iPad 相容。

支援語言:英語

Mathematricks HD(圖1)-速報App

Do you want to do quick calculations for large numbers ? Are you getting less grades in maths ? Do you work in financial business ? Do you want to be a trader ?

If YES, this is the perfect app for you !

This app contains great tricks to do calculations such as multiplication, squaring, division, subtraction, addition easily and quickly. Use this app as a pocket guide to improve your calculation skills. Boast and show your newly acquired skills to friends and colleagues !

The app also contains quiz to practice and test your skills. So go head buy the app, learn the tricks and practice your newly acquired skills !

Trick : Multiplication by 6

Mathematricks HD(圖2)-速報App

1.Add half of the neighbor to each digit.

2.If the starting digit is odd, add 5.

Example: 
6 × 357 = 2142

Working right to left,
7 has no neighbor, add 5 (since 7 is odd) = 12. Write 2, carry the 1.


5 + half of 7 (3) + 5 (since the starting digit 5 is odd) + 1 (carried) = 14. Write 4, carry the 1.

Mathematricks HD(圖3)-速報App


3 + half of 5 (2) + 5 (since 3 is odd) + 1 (carried) = 11. Write 1, carry 1.


0 + half of 3 (1) + 1 (carried) = 2. Write 2.

Mathematricks HD(圖4)-速報App

支援平台:iPad