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Solving Grade 4 exercises on pages 128, 129, concise and effective.
Guide to solving Grade 4 Math exercises on pages 128, 129 (including solving methods)
Exercise 1: Solving Grade 4 practice on pages 128, 129 in the textbook
Solution method:
- Step 1: Write natural numbers as fractions with denominator 1
- Step 2: Make the denominators of fractions the same
- Step 3: Perform fraction addition as usual
Exercise 2: Solving Grade 4 practice on pages 128, 129 in the textbook
Problem:
Complete the sentence:
Solution method:
- For expressions containing parentheses, perform calculations inside the parentheses first, then outside the parentheses
- Adding two fractions with the same denominator: Add their numerators together and keep the denominator unchanged.
Answer:
Exercise 3: Grade 4 practice on pages 128, 129 in the textbook
Problem:
A rectangle has a length of 2/3m and a width of 3/10m. Calculate the half-perimeter of the rectangle.
Solution method:
- To find the half-perimeter of a rectangle, add the length to the width
- Adding two fractions with different denominators:
+ Find a common denominator for the fractions to make them have the same denominator
+ Add the numerators together and keep the denominator unchanged.
Exercise 1: Grade 4 math page 128, 129 textbook
Problem:
Calculate (according to the denominator):
Answer:
Exercise 2: Grade 4 math page 129 textbook
Problem:
Continue writing in the blank:
Answer:
Exercise 3: Grade 4 practice on page 129 in the textbook
Problem:
Here are the answers:
Solution complete. End of task.
The solutions for exercises on pages 128 and 129 are provided below:
