Buzz
Solving Mathematics problems for grade 3 on pages 47 and 48, Cánh Diều book Volume 2
Solving exercises on pages 47 and 48 of Mathematics 3 Workbook Volume 2, Cánh Diều book:
Reviewing What We've Learned
1. Solve Exercise 1 Page 47 Mathematics Grade 3
Problem: a) Read each number below (according to the example):
b) Among the numbers in part a, which is the smallest and which is the largest?
Solution Guide:
a) Read numbers with five digits from right to left (as per the example).
b) Compare the numbers to find the smallest and the largest.
Answer:
a)
96,821: Ninety-six thousand eight hundred twenty-one.
The number 96,821 consists of 9 tens of thousands, 6 thousands, 8 hundreds, 2 tens, and 1 unit.
95,070: Ninety-five thousand seventy.
The number 95,070 consists of 9 tens of thousands, 5 thousands, 7 tens.
95,031: Ninety-five thousand thirty-one.
The number 95,031 consists of 9 tens of thousands, 5 thousands, 3 tens, 1 unit.
92,643: Ninety-two thousand six hundred forty-three.
The number 92,643 consists of 9 tens of thousands, 2 thousands, 6 hundreds, 4 tens, and 3 units.
2. Solve Exercise 2 Page 47 Mathematics Grade 3
Problem: Number?
Solution Guide: Count one unit or 5 units and then fill in the missing numbers in the blanks.
Answer:
3. Solve Exercise 3 Page 47 Mathematics Grade 3
Problem: Round the selling price of each book to the nearest thousand:
Solution Guide: Examine the price of each book, determine which thousand it is closer to, and then answer the question.
Answer:
Consider:
- The number 54,200 is closer to 54,000 than to 55,000.
Therefore, the rounded selling price of the book 'Vietnamese Fairy Tales' to the nearest thousand is 54,000 dong.
- The number 47,800 is closer to 48,000 than to 47,000.
Therefore, the rounded selling price of the book 'Adventures of Cricket' to the nearest thousand is 48,000 dong.
- The number 26,250 is closer to 26,000 than to 27,000.
Therefore, the rounded selling price of the book 'Backyard and the Sky' to the nearest thousand is 26,000 dong.
4. Solve Exercise 4 Page 48 Mathematics Grade 3
Problem: a) State the center, diameter, and radius of the following circle:
b) Choose the letter preceding the correct answer:
A. O is the midpoint of BC.
B. O is the midpoint of AD.
Guidance: Observe the diagram to answer the question.
Answer:
a) Circle with center O, diameter BC, radii OA, OB, OC, OD.
b) O is the midpoint of line segment BC because O is the point between A and B, and OB = OC.
Therefore, choose option A.
5. Solve Exercise 5 Page 48 Mathematics Grade 3
Problem: a) How many hours does each clock show?
b) Choose the letter preceding the correct answer:
If August 30th is a Tuesday, then September 2nd of the same year is:
Solution:
a) Identify the position of the hour and minute hands on each clock and then read the appropriate time.
b) Determine the number of days in August.
Mentally count the days from August 30th to September 2nd.
Answer:
a)
b) August has 31 days.
From August 30th to September 2nd is 4 days.
So, if August 30th is a Tuesday, then September 2nd of the same year is Friday.
Choose C.
Solve Exercise 6:
Observing the picture, answer the questions:
What time does Chị Huyền start working and finish working?
Solution Guide: Identify the positions of the hour and minute hands on each clock and then read the starting and ending times.
Answer:
Observing the clocks, we see that Chị Huyền starts working at 7:40 AM and finishes at 11:25 AM.
6. Solve Exercise 6 Page 48 Mathematics Grade 3
Answers:
Observing the clocks, we find that Chị Huyền starts working at 7:40 AM and finishes at 11:25 AM.
Solving exercises on pages 47 and 48 of Mathematics 3 Workbook Volume 2, Cánh Diều book. We hope students can excel in Math and effectively solve related exercises.
