Mathematics........get faster

This article is about get speed in computation in mathematics.As all know fundamentals of mathematics but how fast one can solve any question takes more consideration.In this article a few tricks of solve maths is discuss in front of you.
Friends,
Problem:1: What is the unit place value for (2345)³=?
Ans. unit place value(5)³=125 so ans is=5

Problem:2: What is the unit place value for (2345)^1233=?
solution: unit place value(2345)¹²³³=?
step 1:First divide 1233 by 4 which is=308 and remainder=1
step 2:Unit place value(2345)¹²³³=(unit digit of number)^remainder
Answer is=5¹=5
Note:(number)⁰=1

Problem:3 What is value of (85)^2=?
Solution: step 1:When there we have to calculate square of number having unit digit 5 then
take square of 5=25 and (ten digit)*(ten digit+1)
Ans is=8*(8+1)25=7225
Friends,
These are only three types of questions.I will discuss more soon.........stay in touch.
Thank you.