Arabic numerals are composed of 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 * * * 10 counting symbols, which are written from left to right according to the bit value method. Small numbers come first, big numbers come last. The number forward is getting smaller and smaller, and the number backward is getting bigger and bigger.
For example:
The number before 4 is 3. (The number before 4 is 4- 1=3, that is, the number before 4 is 3)
The number after 4 is 5. (The number after 4 is 4+ 1=5, that is, the number after 4 is 5).
2 is in front of 4. (Numbers less than 4 are all preceded by 4)
6 comes after 4. (Numbers greater than 4 are all after 4)
4 is between 5 and 6.
Extended data
The numerical order of senior one is to learn the Chinese character list and sort the numbers within 100.
There are many interesting numbers in the hundred tables. In teaching, it is very helpful for students to observe carefully from different angles, find out the arrangement characteristics of these numbers and express them, and answer questions according to a hundred tables, which is helpful to cultivate their observation ability and the ability to find and solve problems.
In teaching, we make full use of the resources provided by teaching materials and design activities such as coloring numbers and finding homes for numbers, which not only enlivens the classroom atmosphere, but also makes students participate in learning activities with great interest.
Example of numerical order:?
Take 33, 34 and 35 as examples:?
① The two numbers adjacent to 34 are 33 and 35; ? The number between 33 and 35 is 34. ?
② The number less than 34 times 1 is 33, and the number greater than 34 times 1 is 35. ?
③ The number before 34 is 33, and the number after 35; ?
④35 is larger than 34 1, and 33 is smaller than 34 1.
Take 52 as an example:
① The numbers between 52 and 60 are: 53, 54, 55, 56, 57, 58, 59? ; (that is, all numbers greater than 52 and less than 60)?
② The five numbers before 52 are: 5 1, 50, 49, 48, 47; The last five numbers are: 53, 54, 55, 56, 57. ?
③ The fifth number before 52 is: 47; The fifth number at the back is: 57.