I. Contents
1、 1x 1= 1， 1x2=2，2x 1=2， 1x3=3，2x2=4，3x 1=3， 1x4=4，2x3=6，3x2=6，4x 1=4， 1x5=5，2x4=8，3x3=9，4x2=8，5x 1=5， 1x6=6，2x5= 10，3x4= 12，4x3= 12，5x2= 10，6x 1=6， 1x7=7。
2、2x6= 12，3x5= 15，4x4= 16，5x3= 15，6x2= 12，7x 1=7， 1x8=8，2x7= 14，3x6= 18，4x5=20，5x4=20， 6x3= 18，7x2= 14，8x 1=8， 1x9=9，2x8= 16，3x7=2 1，4x6=24，5x5=25，6x4=24，7x3=2 1，8x2= 16，9x 1=9。
Second, the memory method
Story memory method: The multiplication formula table is combined with interesting stories, so that children can remember the formula through the story plot. Image memory method: using images or graphics to assist memory, and connecting numbers with specific images will help deepen memory. Repeated practice: through repeated practice, deepen the understanding and memory of multiplication formula. Parents can practice with their children.
Application of multiplication formula
1, shopping calculation: When shopping, we often need to calculate the price of goods. Using multiplication formula can help us to calculate the total price of goods quickly, especially when we need to buy multiple identical goods, using multiplication formula can save time. Calculate the distance: When calculating the distance, we can use the multiplication formula to calculate the relationship between speed and time.
2, change: when looking for change, using multiplication formula can help us quickly calculate the number of change that should be returned. Especially in some occasions that need accurate calculation and change, such as supermarkets, shops and other places, the use of multiplication formula can improve efficiency.
3. Statistical data: When counting data, using multiplication formula can help us to quickly calculate the total number of data. For example, when counting the total number of students in a class, we can use the multiplication formula to calculate the total number of middle school students in a class. Combination problem: When solving some combination problems, using multiplication formula can help us calculate different combination ways.