Current location - Training Enrollment Network - Mathematics courses - Do your homework in the second book of fifth grade mathematics? What are the answers to the third blank and the seventh question of the fifth question on page 53 of People's Education Edition?
Do your homework in the second book of fifth grade mathematics? What are the answers to the third blank and the seventh question of the fifth question on page 53 of People's Education Edition?
Question 1: common multiple of two numbers = least common multiple *N(N is an integer). For example, you can see it.
Question 2: If you count the first one, the total * * * is 3. You can think of it this way: draw all eight poles and modify them. It used to be 3 poles, but now it is 4 poles. The distance is 45*2= 30*3, so there are always 3 poles.