Basic Calculation:23

One Line Multiplication

Multiplication of a three digit no. by a two digit no.

         436           243            354             469            574 

        × 24          × 51          × 63            × 82           × 47

 10₂4₂6₂4    12₂3₁93    22₄3₄0₁2     38₆4₈5₁8    26₆9₆7₂8

Detailed Explanation: This is the general rule of multiplication of any three digit number by a two digit number.

For example, when we multiply 436 by 24; we first multiply 6 by 4, we get 24, so 4 is written and 2 is carry over.

Next we multiply 3 by 4, which is 12 and then 6 by 2, which is 12. We add 12, 12 and 2 (carry over), we get 26. 6 is written and 2 is carry over.

Again, we multiply 4 by 4, which is 16 and then 3 by 2, which is 6. We add 16, 6 and 2 (carry over), we get 24. 4 is written and 2 is carry over.

Lastly, we multiply 4 by 2, which is 8 and add 8 and 2, which is 10. So, 10464 is the answer.