how to do long multiplication?(well i know how and that's the test)

Sagot :

Multiply the least place value digit first. Next, on another row, write zero right on the least place values calculated digit or usually considered as a blank space then continue multiplying. Add two zero on the third row, and vice versa. Add all rows. Lastly, count how many digits on the right of the decimal point on the factors then put a decimal point after the number of digits on the right...