Buzz
Problem:
Calculate (according to the template):
a) 2/5 + 3
b) 4 + 2/3
Solution Method:
Write the whole number in the form of a fraction and then perform addition of two fractions as usual.
Answer:
2. Solve question 2 - Exercise book exercise for fourth-grade math book 2 page 38
Problem Statement:
Fill in the blank with the appropriate fraction:
Solution Method:
- Apply the commutative property of addition: When we swap two fractions in a sum, their sum remains unchanged.
- Apply the associative property of addition: When adding a sum of two fractions with a third fraction, we can add the first fraction to the sum of the second and third fractions.
Answer:
3. Solve question 3 - Exercise book exercise for fourth-grade math book 2 page 38
Problem Statement:
Calculate using the most convenient method:
Solution Method:
Apply the commutative and associative properties of addition to group the appropriate fractions together.
Answer:
4. Solve question 4 - Exercise book exercise for fourth-grade math book 2 page 38
Problem Statement:
A boat runs 3/8 of the distance in the first hour, 2/7 of the distance in the second hour, and 1/4 of the distance in the third hour. How many parts of the distance does the boat run after three hours?
Solution Method:
Distance the boat runs in three hours = Distance the boat runs in the first hour + Distance the boat runs in the second hour + Distance the boat runs in the third hour.
Answer:
After three hours, the boat runs a number of parts of the distance:
3/8 + 2/7 + 1/4 = 51/56 (distance)
Answer: 51/56 distance
You are viewing the guidance for solving 4th-grade math problem on page 38 of VBT exercise book 2 Practice exercise 117. You can review the guidance for solving 4th-grade math problem on page 37 of VBT exercise book 2 Practice or preview the guidance for solving 4th-grade math problem on page 39 of VBT exercise book 2 Fraction subtraction to understand more about the lesson.
Wishing you all the best in learning mathematics.
