口算是笔算的基础，笔算实际上是把一道计算题按笔算规定的法则和形式分步骤进行口算的结果。口算的熟练程度直接影响着笔算的速度和准确性。重视和加强口算教学，不仅可以培养学生的注意力、记忆力和观察能力，而且可以培养学生良好的思维品质，使学生的逻辑思维和直觉思维都得到发展。 Mouth calculation is the basis of the pen calculation, pen calculation is actually a calculation of the pen calculation according to the rules and form the penultimate calculation results. Proficiency in numeracy directly affects the speed and accuracy of pen calculations. Emphasizing and strengthening oral arithmetic can not only cultivate students 'attention, memory and observation ability, but also develop students' good thinking quality and develop their logical thinking and intuition thinking.