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Guide for Solving 4th-grade math problems on pages 84 and 85 in Workbook 2, Review of Natural Numbers (Continued), question 153: Offers detailed solutions and instructions for exercises 1, 2, 3, 4, and 5, aiding students in completing tasks easily and reinforcing knowledge related to natural numbers.
Solving 4th-grade math problems on pages 84 and 85 in Workbook 2, Review of Natural Numbers (Continued), question 153
1. Solve Exercise 1 - Math Workbook Grade 4 Workbook 2 page 84
Question:
Fill in the blanks:
1201 ... 999
24,601 ... 2,461
Complete the sequence:
Find the missing numbers:
Fill in the blanks:
Complete the series:
Method of solving:
When dealing with two natural numbers:
- The one with more digits is greater. The one with fewer digits is smaller.
- If the two numbers have equal digits, compare each pair of digits in the same position from left to right.
Answer:
2. Solve problem 2 - Math workbook grade 4 volume 2 page 84
Problem:
Circle the letter in front of the correct answer: ....
Insert the appropriate digit in the blank to have:
A. 6
B. 7
C. 8
D. 9
Solving Method
Compare digits in each place value from left to right and fill in the missing digits in the blanks.
Answer
Choose answer D.
3. Solve problem 3 - Math Workbook Grade 4 Workbook 2 page 84
Problem:
The population data of a province or city in our country in April 2011 (source: Wikipedia) is recorded in the table below:
a) Continue writing in the blanks:
In the provinces and cities, the place with the least population is .............; the place with the most population is .............
b) Write the names of provinces and cities in ascending order of population
Solution Method
a) Examine the data table to find the population of provinces and cities, then fill in the blanks with appropriate numbers.
b) Compare the population of provinces and cities, and accordingly arrange the names in ascending order of population.
Answer
a) Continue writing in the blanks:
In the list of provinces and cities, the place with the least population is Da Nang, and the place with the most population is Ho Chi Minh City.
b) Write the names of provinces and cities in ascending order of population: Da Nang; Vinh Long; Hai Phong; Thanh Hoa; Ho Chi Minh City.
4. Solve problem 4 - Math workbook grade 4 unit 2 page 85
Problem:
Find the three-digit numbers x, given:
Solution Method
- A three-digit number has the tens and units digits equal to 0.
- List the satisfying values of x.
Answer
x takes values 200, 300, and 400.
5. Solve problem 5 - Math workbook grade 4 volume 2 page 85
Problem:
Fill in the blanks with appropriate numbers:
- The largest three-digit number is: .............
- The largest even three-digit number is: .............
- The smallest three-digit number is: .............
- The smallest odd three-digit number is ............
Solution Method
Utilize the theory of natural numbers to construct numbers satisfying the problem requirements.
Answer
- The largest three-digit number is: 999
- The largest even three-digit number is: 998
- The smallest three-digit number is 100
- The smallest odd three-digit number is 101
You are currently exploring the guide to solve 4th-grade math problems on pages 84 and 85 in Workbook 2, Review of Natural Numbers (Continued), question 153. Feel free to revisit the instructions for Solving Grade 4 Math Problems on pages 83 and 84, Workbook 2, Reviewing Natural Numbers, or preview the instructions for Solving Grade 4 Math Problems on pages 85 and 86, Workbook 2, Reviewing Natural Numbers (continued) to gain a better understanding of the lesson.
