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五年级的同学们,大家好!又到了期末复习的阶段了,今天我们就一起来复习“数与代数”。在“数与代数”这一知识领域中,本学期我们学习了小数乘法、小数除法和简易方程的知识。一、小数乘法。1.小数乘法的意义。小数乘整数,它的意义与整数乘法的意义相同,也是求几个相同加数和的简便运算;当一个数乘小数时,可理解为求这个数的十分之几、百分之几、千分之几……2.小数乘法的计算方法。计算小数乘法时,先按照整数乘法的方
Fifth grade students, Hello, everyone! Reached the stage of the review period, and today we work together to review “Numbers and algebra ”. In the field of Knowledge and Algebra, we learned the knowledge of fractional multiplication, fractional division, and simple equations this semester. First, the decimal multiplication. 1. The meaning of fractional multiplication Fraction by an integer, its meaning and the meaning of integer multiplication is the same, but also seek a few simple addition of the same sum; when a number by a decimal, it can be understood as a few tenths of a few percent, a few thousand What fraction ... 2. The calculation of fractional multiplication. When calculating decimal multiplication, the square is first multiplied by an integer