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Guidelines for solving Exercise 2 on page 20 Math 4
Problem statement:
Represent each number as a sum (according to the model): 387; 873; 4738; 10 837.
Model: 387 = 300 + 80 + 7.
Solution method:
Analyze the given number into the sum of corresponding places (hundreds of thousands, tens of thousands, thousands, hundreds, tens, units).
Answer:
Students can follow the same model to express natural numbers as sums:
Number 873 is written as the sum: 873 = 800 + 70 + 3.
Number 4,738 is written as the sum: 4,738 = 4,000 + 700 + 30 + 8.
Number 10,837 is written as the sum: 10,837 = 10,000 + 800 + 30 + 7.
Section solutions for exercises on page 20 Math 4, Writing natural numbers in the decimal system, includes 3 exercises. Following the solution for Exercise 2 on page 20 Math 4, Mytour provides suggested answers and detailed solution methods for Solving Exercise 1 on page 20 Math 4 and Solving Exercise 3 on page 20 Math 4. Students need to grasp the knowledge from this lesson.
