First-year students are in the stage of learning basic knowledge. For math learning, they can improve their interest and ability in learning through some interesting math problems. Here are some interesting math problems suitable for first-year students:

1. Numeric Solitaire: Starting from 1, each student speaks a number that is 1 larger than the previous one in turn until the last student speaks a number that is 10 larger than the previous one. For example, the first student said 1, the second student said 2, the third student said 3, and so on, and the last student said 1 1.

2. Number finding fault: two numbers composed of the same number are given, but the order of these two numbers is different. Ask the students to find out the difference between these two numbers. For example, given two numbers 5678 and 8756, students need to find out the difference between the two numbers is that the order of the numbers is different.

3. Fill in the blanks with numbers: Give a number consisting of several numbers, but one of them is hidden. Ask the students to fill in the hidden numbers according to the known numbers. For example, given a number 2___4, students need to fill in the hidden numbers according to the known numbers 2 and 4 to get 24.

4. Digital puzzle: Divide a number consisting of several numbers into several parts, and ask the students to rearrange these parts, so that a new number can be formed. For example, give a number 1234 and divide it into four parts: 1, 2, 3, 4. Ask the students to rearrange these parts and get a new number.

5. Digital maze: Draw a maze on square paper, and there are some numbers in the maze. Let the students start from a starting point and find the end point in the maze according to certain rules by moving the arrows on the box. In the maze, students need to move according to the numbers on the arrow.