- Main
- Mathematics
- Speed Mathematics: Secret Skills for...
Speed Mathematics: Secret Skills for Quick Calculation
Bill HandleyPeople who excel at mathematics use better strategies than the rest of us; they are not necessarily more intelligent.
Speed Mathematics teaches simple methods that will enable you to make lightning calculations in your head–including multiplication, division, addition, and subtraction, as well as working with fractions, squaring numbers, and extracting square and cube roots. Here’s just one example of this revolutionary approach to basic mathematics:
96 x 97 = Subtract each number from 100.
96 x 97 = 4 3
Subtract diagonally. Either 96—3 or 97— 4. The result is the first part of the answer.
96 x 97 = 93 4 3
Multiply the numbers in the circles. 4 x 3 = 12. This is the second part of the answer.
96 x 97 = 9312 4 3
It’s that easy!
该文件将通过电报信使发送给您。 您最多可能需要 1-5 分钟才能收到它。
注意:确保您已将您的帐户链接到 Z-Library Telegram 机器人。
该文件将发送到您的 Kindle 帐户。 您最多可能需要 1-5 分钟才能收到它。
请注意:您需要验证要发送到Kindle的每本书。检查您的邮箱中是否有来自亚马逊Kindle的验证电子邮件。