Hi! Hello, friends! I am Teacher Qiao Jie Fangyuan. Today I will share with you a small test paper, a test paper of 1 to 2 in the Seventh Mathematics Mathematics Edition. I thought this test was not difficult, but when the results came out, I was stunned and the last question was wiped out. It was so miserable. Let’s take a look together below. There are also several check topics on this page of
. For example: Question 8, because |x|≥0, so -x≥0, so x is a non-positive number.
Question 15, did not talk about the direction of movement, and should be discussed according to the situation.
Question 16, find the rule, and observe that: odd, positive and even, negative, the denominator is 1 larger than the numerator, and the numerator and the sequence number are the same.
do it first and then check the answers well!
Question 22 is a difficult point. π is not 3.14. The approximation value is not given in the question, nor is it allowed to find accuracy, so the calculation result is π and does not need to be replaced with 3.14.
Grade 7 children have just entered middle school, and many knowledge points that are out of touch with primary school need to be corrected and supplemented one by one. For example, as long as you write a solution for the process, you must first write a solution. π is π without conditions and cannot be replaced with 3.14. When studying mathematics, you must be diligent in summarizing, thinking well, and summarize similar questions. Only in your future study can you learn from each other, learn from one example and learn from one example and be at ease.
Follow the teacher and don’t get lost. Don’t forget to like and collect it! Happy Double Day to friends! See you next time!