Unify the unit first:

3 meters =30 decimeters

30÷6=5 (decimeter)

In other words, each strip is 5 decimeters long.

Problem-solving skills

This topic mainly investigates the significance of average division.

Divide 3 meters into meters and multiply it by 3 times the speed 10, that is, 3 meters =30 decimeters; Then find the decimeter number of each section, and the average score is the specific quantity of 30 decimeters, and find the specific quantity; According to the meaning of division, divide 30 decimeters into 6 segments, find out how much each segment is, and calculate by division.

1, the average is to add up all the numbers and divide them by the number of numbers, and then you can get the average. Of course, this is the most basic arithmetic average.

2. Arithmetic average refers to the sum of all data in a set of data divided by the number of data. It is an indicator reflecting the trend of data concentration.

Extended data:

First, the division formula:

1, dividend ÷ divisor = quotient example: 8÷2 =4.

2. Divider quotient = divisor Example: 8÷4=2.

3. Quotient× Divider = Divider Example: 4×2=8.

4. There is another case: dividend ÷ divisor = quotient ... remainder (not greater than divisor) and divisor × quotient+remainder = dividend.

Second, the nature of the division operation:

1, the dividend is enlarged (reduced) by n times, and the quotient is correspondingly enlarged (reduced) by n times under the condition that the divisor is unchanged.

2. The divisor is expanded (reduced) by n times, while the dividend is unchanged, and the quotient is correspondingly reduced (expanded) by n times.

3. Dividing the dividend by two divisors is equal to dividing by the product of these two divisors. Sometimes simple operations can be performed according to the nature of the division. For example: 300÷25÷4=300÷(25x4)