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Is There a Way to Square 2-Digit Numbers Quickly? While it’s easy to calculate the squares of single-digit numbers like 5 in your head (since those squares are part of the basic multiplication table ...

19 is only 1 away from 20, so you prefer to start by multiplying 20 times 5, which equals 100. Then we need to take away a squadron of 5, because there are actually only 19 squadrons, not 20. 100 take ...

To multiply two numbers with the same unit places, such as 97 and 98, one can write it as (100-3) x (100-2). Next, add the two numbers 3 and 2 together, which gives 5. Subtract 5 from 100 (as it falls ...

Listen up ... it's time to test your maths skills! Catriona Shearer presents the Audio Maths Rainbow Quiz. Rainbow audio maths quizzes - Cloud Rating 1 Try out our ...

This summer, battle lines were drawn over a simple math problem: 8 ÷ 2(2 + 2) = ? If you divide 8 by 2 first, you get 16, but if you multiply 2 by (2 + 2) first, you get 1. So, which answer is right?

Multiplication of two numbers is easy, right? At primary school we learn how to do long multiplication like this: Methods similar to this go back thousands of years, at least to the ancient Sumerians ...