Solve Exercise 1 on Page 80 Math Grade 4 Textbook

Guidance for Solving Exercise 1 on Page 80 Math Grade 4 Textbook

Problem:
Calculate.
a) 420 : 60                                                              b) 85000 : 500
    4500 : 500                                                               92000 : 400

Solution Method:
Rule for dividing numbers with ending zeros: Remove the same number of zeros at the end of both the dividend and divisor, then perform division as usual. 

Answers:
a) 420 : 60 = 42 : 6 = 7
    4500 : 500 = 45 : 5 = 9
b) 85000 : 500 = 850 : 5 = 170
    92000 : 400 = 920 : 4 = 230

Solution for exercises on page 80 Math Grade 5 consists of 3 exercises. After solving Exercise 1 on page 80 Math Grade 4 Textbook, students can continue to refer to hints and methods for solving Exercise 2 on page 80 Math Grade 4 Textbook and Exercise 3 on page 80 Math Grade 4 Textbook, to enhance their understanding of Grade 4 mathematics.