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Grade 4 Math Solutions Workbook 1 KNTT Pages 6, 7, 8 Reviewing Numbers up to 100,000 is a useful document for 4th-grade students following the Kết Nối Tri Thức curriculum. Through this material, students can easily generate ideas for solving problems, reinforce, and practice their knowledge of Number Review.
Explore more quality resources for Grade 4 Mathematics:
- Grade 4 Math Solutions Connecting Knowledge Textbooks
- Grade 4 Math Solutions pages 14, 15, 16 Cánh Diều Workbook Volume 1 - Exercise 5: Numbers within the range of 1,000,000 (continued)
- Grade 4 Math Solutions page 7 CTST Workbook Volume 1 - Exercise 1: Reviewing Numbers up to 100,000
Grade 4 Math Solutions pages 6, 7, 8 Workbook 1 KNTT
Exercise 1: Reviewing Numbers up to 100,000
Solving Exercise 1 on page 6 Grade 4 Mathematics Workbook 1 KNTT
Guidance:
Write the numbers sequentially from tens of thousands, thousands to units.
Solution:
Solving Exercise 2 on page 6 Grade 4 Mathematics Workbook 1 KNTT
Problem: Write and read the number, knowing that it consists of:
a) 4 tens of thousands, 2 thousands, 5 hundreds, and 3 tens
b) 8 thousands, 8 hundreds, 8 tens, and 8 units.
c) 5 tens of thousands, 7 hundreds, 1 tens, and 4 units.
d) 9 tens of thousands, 4 thousands, and 5 units.
Solution Guide:
- Write the digits sequentially from tens of thousands, thousands to units.
- Read the digits from the thousands place to the units place.
Solution:
a) 4 tens of thousands, 2 thousands, 5 hundreds, and 3 tens
- Write the number: 42,530
- Read the number: Forty-two thousand five hundred thirty.
b) 8 thousands, 8 hundreds, 8 tens, and 8 units.
- Write the number: 8,888
- Read the number: Eight thousand eight hundred eighty-eight
c) 5 ten thousands, 7 hundreds, 1 ten, and 4 units.
- Write the number: 50,714
- Read the number: Fifty thousand seven hundred fourteen.
d) 9 tens of thousands, 4 thousands, and 5 units.
- Write the number: 94,005
- Read the number: Ninety-four thousand five.
Solving Exercise 3 on page 6 of Grade 4 Mathematics Workbook 1 of the Connecting Knowledge series
Problem: Number?
a) 6,825 = 6,000 + 800 + 20 + ?
b) 33,471 = 30,000 + 3,000 + ? + 70 + 1
c) 75,850 = 70,000 + 5,000 + 800 + ?
d) 86,209 = 80,000 + 6,000 + ? + 9
Solution Guide:
- Step 1: Break down the numbers into sums.
- Step 2: Fill in the appropriate number in the question mark.
- Step 2: Fill in the appropriate number in the question mark.
Solution:
a) 6,825 = 6,000 + 800 + 20 + 5
b) 33,471 = 30,000 + 3,000 + 400 + 70 + 1
c) 75,850 = 70,000 + 5,000 + 800 + 50
d) 86,209 = 80,000 + 6,000 + 200 + 9
Solving Exercise 4 on page 7 of Grade 4 Mathematics Workbook 1 of the Connecting Knowledge series
Problem: Number
Guidance for solving:
a) Increase by 1 unit then fill in that number into the question mark.
b) Increase by 10,000 units then fill in that number into the question mark.
Solution:
a) We observe: Moving from left to right, the number after is greater than the number before by 1 unit. Therefore, students only need to add 1 to the number before the question mark.
b) We observe: Moving from left to right, the number after is greater than the number before by 10,000 units. Therefore, to fill in the question mark, students only need to add 10,000 to the number before it.
Solution for Exercise 5 on page 7 of Mathematics Grade 4 Workbook 1 Connecting Knowledge
Exercise: Number
Guidance:
- The number immediately preceding the given number is 1 unit less than that number.
- The number immediately following the given number is 1 unit greater than that number.
Solution:
Solution for Exercise 1 on page 7 of Mathematics Grade 4 Workbook 1 Connecting Knowledge
Exercise:
Guidance:
- Step 1: Calculate the value of the expression.
- Step 2: Perform Comparison: If the number is smaller, then insert the less than sign.
Solution:
Solution for Exercise 2 on Page 7 of Mathematics Grade 4 Workbook Connection of Knowledge
Problem: Choose the correct answer.
a) The smallest number among 20,107; 19,482; 15,999; 18,700 is:
A. 20,107
B. 19,482
C. 15,999
D. 18,700
b) Which number below has hundreds digit of 8?
A. 57,680
B. 48,954
C. 84,273
D. 39,825
c) The population of a ward is 12,967 people. The rounded population to the nearest thousand is:
A. 12,900
B. 13,000
C. 12,000
D. 12,960
Guidance:
a) Compare the given numbers in the problem to find the smallest one.
b) Identify the position of the hundreds digit in the number sequences and find the number 8 in that position, then choose the appropriate answer.
When rounding numbers to the nearest thousand, compare the hundreds digit with 5. If the hundreds digit is less than 5, round down; if it's greater than 5, round up.
Solution
Problem 3 on page 8 of Grade 4 Math Volume 1 in the Knowledge Link series
Problem: Number
Guidance: Based on the way numbers are written as sums of ten thousands, thousands, hundreds, tens, and ones, fill in the blanks with appropriate numbers.
Solution
Problem 4 on page 8 of Grade 4 Math Volume 1 in the Knowledge Link series
Problem:
During the first four days of the expanded vaccination campaign, City A administered the following doses of COVID-19 vaccine:
Monday: 36,785 vaccine doses
Tuesday: 35,952 vaccine doses
Wednesday: 37,243 vaccine doses
Thursday: 29,419 vaccine doses
a) On which day did City A administer the most vaccine doses? On which day did City A administer the fewest vaccine doses?
b) Write the names of the days in order of the number of vaccine doses administered, from least to most.
Guidance:
a) Compare the number of vaccine doses administered on each day and then answer the question.
b) Based on point a), arrange the names of the days in order of the number of vaccine doses administered, from least to most.
Solution
Problem 5 on page 8 of Grade 4 Math Volume 1 in the Knowledge Link series
Problem: Try it out!
The number 28,569 is rearranged by the operations as follows:
Move one stick to form the smallest possible number.
Guidance: Move one stick to form the number 20,568.
Solution
Here is the solution for Grade 4 Mathematics from the Knowledge Link series, pages 6, 7, 8, Unit 1, Review of numbers up to 100,000. You can also refer to Grade 4 Mathematics, pages 9, 10, 11, Unit 1, KNTT series - Exercise 2: Review of operations within the range of 100,000 and Grade 4 Mathematics, pages 12, 13, Unit 1, KNTT series - Exercise 3: Even and odd numbers to prepare for the new lesson.
