First, multiplication and division are paired.

1, multiplication and division pairing is a common skill to solve 24-point problems. According to the reference, multiply one of the numbers by the multiplication and division sign, and then subtract the result from the rest. In this way, the product sum quotient of two numbers and the quotient of two numbers can be calculated conveniently.

2. Multiplication and division pairing can also help us understand the relationship between two numbers and how to carry out appropriate multiplication and division operations. We can solve the 24-point problem more accurately through multiplication and division matching skills.

Second, multiply first and then subtract.

Multiplying before subtracting is a skill in subtraction. Especially for the case that subtraction is the addition of two numbers, it is more appropriate to multiply first and then subtract. For example, 2, 5, 7, 9, the result of multiplication is 25-7, that is, multiply 5 to get 15, and then subtract 7 to get 2. This technique allows us to subtract effectively and get the answers we need.

Third, the use of brackets.

1, the use of parentheses is one of the basic operations in mathematics, but it is often ignored in the game of 2 1 point. In fact, numbers can be divided into several groups with brackets, thus obtaining more calculation possibilities.

2. For example, when there is a 2, a 3, a 4 and a 5, try (2+5)x(4-3)= 14/2=7. By using parentheses, we can skillfully use different algorithms to calculate 24 points quickly.

Fourth, expand the scope of values.

By introducing a decimal point or combining two 2' s and two 8' s, the range of values can be expanded. This can not only expand the range of 24 points more accurately, but also avoid calculation errors.

Five, gather together five methods

The method of 1 plus 5 is one of the solutions of the 24-point technique, and the numbers that meet the conditions can be found by enumeration or addition. Specifically, first determine that one of the numbers is 5 or 10, then find another number greater than or equal to 5 through enumeration or addition, and then subtract another number from this number to get the result.

If you can get a multiple of 5, subtract one of the numbers and finally get another number, you can get 24 points.