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一、复习整数、自然数、质数、合数的习题及数举安排 1.将下面各数分别填入圈内。 19 27 0 47 1 85 97 130 整数自然数质数合数此题可找两名学生上台填写。其余学生可打开书本,在第45面上填写整数、自然数、质数、合数。集体订正后,指出自然数和0都是整数,并板书出来。 2.(让学生口答)什么是自然数?整数与自然数有什么区别?什么叫质数、合数?怎样判断一个自然数是质数还是合数?
First, the review integer, natural number, prime number, the number of exercises and the number of arrangements 1. The following numbers were filled in the circle. 19 27 0 47 1 85 97 130 Integer Naturals Prime Sums This question can be asked to fill in two students. The remaining students can open the book, fill in the 45th integer, natural number, prime number, composite number. After the collective revision, it is pointed out that natural numbers and 0s are all integers, and that the writing is out. What is a natural number? What is the difference between an integer and a natural number? What is a prime number, a composite number? How to determine whether a natural number is a prime number or a composite number?