Guide to solve Exercise 1 Page 76 Math 4
Problem:
a) Calculate in two ways:
(15 + 35) : 5;
(80 + 4) : 4
b) Calculate in two ways (according to the example)
Example: 12 : 4 + 20 : 4 = ?
Method 1: 12 : 4 + 20 : 4 = 3 + 5 = 8.
Method 2: 12 : 4 + 20 : 4 = (12 + 20) : 4 = 32 : 4 = 8.
18 : 6 + 24 : 6;
60 : 3 + 9 : 3.
Solution Method:
- For part a):
+ Method 1: Execute calculations inside parentheses first, then outside parentheses
+ Method 2: Apply the formula: (a + b) : c = a : c + b : c => Perform division first, then addition
- For part b): Refer to the example above and follow similar steps as the model exercise.
a)
Section solving exercises page 76 math 4, Division of a Sum by a Number consists of 3 exercises. After solving Exercise 1 on page 76 Math 4 textbook, Mytour provides suggested answers and detailed solution methods for Solving Exercise 2 Page 76 Math 4 and Solving Exercise 3 Page 76 Math 4. Students need to grasp the knowledge from this lesson.
