Question

What method can you use to calculate 40÷7 fast?​

Answer 1

Explanation:

In your head:

5 * 7 = 35 so its 5 point something with remainder 5.

7*7 = 49 so its 5.7 approximately.

Answer 2

Usally the fastest method to calculating a problem is to do it in your head. With enough practice your brain will be faster then most tools, ganing efficiency with practice.