A publicity board is 4 meters long. How many colorful flags does it take to make a lace with a colorful flag with a side length of 5 meters?

Solution:

4 meters =40 decimeters

40÷5=8 (front)

So you need eight such colorful flags.

Extended data

The division algorithm can be divided into the following three situations:

(1) intra-table division. Both dividend and divisor are single digits, or dividend is two digits, divisor is one digit, and quotient is the division of one digit. You can directly use the multiplication formula to find the quotient. This division is usually called intra-table division.

For example: 48÷6=? Because of 6848, quotient 8; Another example: 45÷9=? Because five, nine, four and five, the quotient is five.

(2) The divisor is the division of a single digit. Division in which the divisor is a single digit is calculated according to the operational nature of division.

(3) The divider is the division of multiple numbers. Division in which the divisor is a multi-digit number is also calculated according to the operational nature of division.