1, decimal times integer meaning: a simple operation to find the sum of several identical addends. For example, 3.6×5 indicates the sum of five 3.6 or the multiple of five 3.6. Decimal Multiplying Decimal Meaning: Find the fraction of this number. For example, 2.6×0.4 is four tenths of 2.4. What is it? What is 8.5×3.4 times that of 8.5?

2. Calculation method of decimal multiplication: To calculate decimal multiplication, first calculate the product by integer multiplication, then look at a factor * * * and how many decimal places there are, count the digits on the right side of the product and point to the decimal point; When the number of decimal places of the product is not enough, 0 should be added in front, and then the decimal point should be calculated; Those with zeros after the decimal point should be removed.

This series has the following characteristics:

1, synchronous matching

According to the actual needs of teaching, each paper includes class (meeting) exercise paper, unit training paper, mid-term paper, final paper, test analysis and reference answers, which are closely synchronized with the supporting teaching materials.

2. Practice easily

Let students comprehensively test the learning effect of the day in a short time every day, and truly achieve the purpose of reducing the burden and raising interest.