When we speak of "squaring" a number,we mean multiplying the number by itself. To square 23 we write.
23 X 23 (or commonly 23 sq.)
The process of multiplying a number by itself follows a systematic pattern which lends itself readily to short-cut methods. The simple rules explained in this blog cover an amazingly wide range of numbers. Most of the shortcut included here involve two-digit numbers, but a few involve three - and four-digit numbers. With a little ingenuity,number of any size can be squared easily,used the short cuts that follow as the basis for many others. But there is a law of diminishing returns in using larger numbers; then, instead of saving time and labour, the short cut becomes merely a "stunt".
23 X 23 (or commonly 23 sq.)
The process of multiplying a number by itself follows a systematic pattern which lends itself readily to short-cut methods. The simple rules explained in this blog cover an amazingly wide range of numbers. Most of the shortcut included here involve two-digit numbers, but a few involve three - and four-digit numbers. With a little ingenuity,number of any size can be squared easily,used the short cuts that follow as the basis for many others. But there is a law of diminishing returns in using larger numbers; then, instead of saving time and labour, the short cut becomes merely a "stunt".
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