What is the sum of 51 and 19 times
Add once as follows:
51+51
The second time was as follows
51+51+51
Add 19 times as follows:
51+51+…… +51 (20) = 51 * 20 = 1020
Add once as follows:
51+51
The second time was as follows
51+51+51
Add 19 times as follows:
51+51+…… +51 (20) = 51 * 20 = 1020