Mental Arithmetic
Mental Arithmetic . 100 difficulty levels, 150,000 users, 60 million questions answered. One way to find it would be to multiply 36 by 10 and then add 36 on the result. Collins Mental Maths Book 4 Collins Learning from collins.in If you have any questions, please contact arithmetic@zetamac.com. Get as many correct answers as possible within the given time limit. But getting the basics right will help you.