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In the previous article, we have discussed few cases of Multiplication with "vertically and crosswise" sutra. In this article, we shall learn the remaining cases.
E. Multiplying three digit by three digit numbers
For example: abc x pqr
Multiply:
1) vertically (a x p)
2) crosswise in both directions and add (a x q) + (b x p)
3) crosswise in both directions and add (a x r) + (b x q) + (c x p)
4) crosswise in both directions and add (b x r) + (c x q)
5) vertically (c x r)
Step2 and Step4 are same as we did in the previous sections i.e. multiplying crosswise with two columns at a time. But in Step3, we multiply crosswise using the outer columns, then multiply vertically in the middle column and add these numbers.
In the previous article, we have discussed few cases of Multiplication with "vertically and crosswise" sutra. In this article, we shall learn the remaining cases.
E. Multiplying three digit by three digit numbers
For example: abc x pqr
Multiply:
1) vertically (a x p)
2) crosswise in both directions and add (a x q) + (b x p)
3) crosswise in both directions and add (a x r) + (b x q) + (c x p)
4) crosswise in both directions and add (b x r) + (c x q)
5) vertically (c x r)
Step2 and Step4 are same as we did in the previous sections i.e. multiplying crosswise with two columns at a time. But in Step3, we multiply crosswise using the outer columns, then multiply vertically in the middle column and add these numbers.
