今天,老师一进教室就对我们说:“同学们,你们已经学会乘法计算了,今天,我再教你们一种奇妙、简单还有趣的计算方法,工具就是我们自己的双手。当然,这种手指计算法只适用于用9乘1至10的各数。”老师叫我们把自己的双手并排放在桌子上,全部手指伸直,从左到右,每个手指都代表一个数字,左手:小拇指代表1,无名指代表2,中指代表3,食指代表4,大拇指代表5;右 Today, as soon as the teacher enters the classroom, he says to us: “Classmates, you’ve learned how to multiply, and today I teach you a wonderful, simple and funny way of calculating that tool is our own hands. Of course, The finger calculation is only valid for numbers that use 9 to 1 to 10. ”The teacher told us to put our hands side by side on the table, all the fingers straight, from left to right, each finger represents a number, Left hand: little finger 1, ring finger 2, middle finger 3, index finger 4, thumb 5; right