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Solving Grade 3 Math on pages 10 and 11 of Workbook 2
Solving exercises on pages 10 and 11 of Math 3 Workbook 2, book Connecting Knowledge with Life:
Comparing numbers within the range of 10,000
Activity
1. Solve Exercise 1 Page 10 Math Grade 3 Textbook
Problem Statement:
Guidelines for solving:
+) Between two numbers, the one with fewer digits is smaller.
+) If two numbers have the same number of digits, compare each pair of digits in the same column, from left to right.
Answer:
2. Solve Exercise 2 Page 10 SGK Math Grade 3
Problem: Mai, Nam, and Viet are in a maze (as shown in the picture).
Question:
a) Each person exits the maze through which door?
b) Who exits the maze through the door with the largest number?
c) Who exits the maze through the door with the smallest number?
Guidelines for solving:
a) Observe the picture to find the exit route of each person from the maze. Then identify the door number for each person.
b, c) Compare the numbers written on the doors and answer the questions.
Answer:
a) Observing the picture, we see that Mai exits the maze through door number 1,420, Nam exits through door number 2,401, and Viet exits through door number 1,240.
b)
Number 2,401 is the largest. Therefore, Nam exits the maze through the door with the largest number.
c) Number 1,240 is the smallest. Therefore, Viet exits the maze through the door with the smallest number.
3. Solve Exercise 3 Page 10 Math Grade 3 Textbook
Problem: The robot has passed through four bridges with the following lengths:
a) Among those bridges, which one is the longest and which one is the shortest?
b) List the names of the bridges in order from longest to shortest.
Guidelines for solving:
a) Compare the lengths of the four bridges to find the longest and shortest bridges among them.
b) List the names of the bridges in order from longest to shortest.
Answer:
a) We have:
So among those bridges, Đình Vũ - Cát Hải Bridge is the longest and Cần Thơ Bridge is the shortest.
b) The names of the bridges in order from longest to shortest are: Đình Vũ - Cát Hải Bridge; Vĩnh Thịnh Bridge; Nhật Tân Bridge; Cần Thơ Bridge.
Practice
1. Solve Exercise 1 Page 11 Math Grade 3 Textbook
Problem: Đ, S?
Step 1: Compare the two sides.
Step 2: If correct, write D, if wrong, write S in the blank box.
Answer:
2. Solve Exercise 2 Page 11 Math Grade 3 Textbook
Problem: Two squirrels are traveling around the world in a hot air balloon. They have prepared four bags of acorns to eat gradually in order from the heaviest bag to the lightest bag. Which bag will they eat last?
Guidelines for solving:
Compare the weights of the four bags of acorns and arrange them in descending order. From there, find the bag of acorns to be eaten last.
Answer:
Since the two squirrels eat gradually from the heaviest bag to the lightest bag, the bag of acorns to be eaten last is the bag weighing 4,352g.
3. Solve Exercise 3 Page 11 Math Grade 3 Textbook
Problem: The robot has reached four mountain peaks in Vietnam during the two summer months:
In June: Pu Si Lung peak with a height of 3,083m, Phan-xi-păng peak with a height of 3,143m.
In July: Lảo Thẩn peak with a height of 2,826m, Tây Côn Lĩnh peak with a height of 2,427m.
List the names of these peaks in order from the lowest to the highest.
Guidelines for solving: Compare the heights of the four mountain peaks and then list the names of the peaks in order from the lowest to the highest.
Answer:
So the names of the mountain peaks in order from the lowest to the highest are: Tây Côn Lĩnh peak, Lảo Thẩn peak, Pu Si Lung peak, Phan-xi-păng peak.
- See more: Solutions for exercises on pages 12, 13, 14 of Math 3 Volume 2 textbook, connecting knowledge with life
4. Solve Exercise 4 Page 11 Math Grade 3 Textbook
Problem: Number?
Guidelines for solving: Use knowledge of natural numbers to write numbers as required by the problem.
Answer:
The smallest number with four different digits is 1023.
The smallest number with four identical digits is 1111.
The smallest number with four digits is 1000.
The largest number with four different digits is 9876.
The largest number with four digits is 9999.
5. Solve Exercise 5 Page 11 Math Grade 3 Textbook
Problem: Mai has four cards with numbers: 3, 0, 2, and 7. What is the smallest four-digit number that Mai can create?
Guidelines for solving:
We form four-digit numbers from the four cards with numbers 3, 0, 2, and 7. Note that the numbers formed from all four cards must have different digits. Hence, we can answer the question of the problem.
Note: The thousands digit must be different from 0.
The smallest four-digit number formed from the given cards is 2,037.
Hoping this solution from pages 10 and 11 of Mathematics 3 Textbook Volume 2, Connecting Knowledge with Life, helps you with your exercises and solidifies your understanding of the lesson.
Hy vọng với lời giải bài tập trang 10, 11 SGK Toán 3 Tập 2, sách Kết nối tri thức với cuộc sống này, các em đã có thể làm được mọi bài tập và nắm chắc kiến thức bài học.
