One day, Ma Xiaotiao and his father went to see the Flower Fair. The tour guide introduced the largest tulip garden, which is18m long and14m wide. Ma Xiaotiao became interested in this beautiful garden and wanted to know its area, but Ma Xiaotiao couldn't start without paper and pen. Dad calculated that it was 252 square meters, because he used the quick calculation method. Dad told Ma Xiaotiao that the calculation rule of a dozen times a dozen is: add up the single digits and add10; The final sum is multiplied by10; Single digit multiplication; Add up the two products. Ma Xiaotiao calculated the garden according to his father's method, and 18× 14 is: 8 4 =12,10 = 22,22×10 = 220,4.
Students, you can also try this method. It's really simple and convenient. Have you learned?