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Study with Ghada› Math Fourth Grade, Primary› Unit 1

Lesson ⁦1-5⁩: Order Numbers

Math · Fourth Grade, Primary · Unit 1: Place Value · First Semester

A 10-question quiz; after every question you'll see the right answer with an explanation.
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What will you learn in this lesson?

In this lesson we order a set of numbers in ascending order from least to greatest or in descending order from greatest to least. Ordering is a skill we need for reading tables and comparing lengths and prices.

  • Orders three or more numbers in ascending and descending order
  • Uses place value to compare numbers before ordering them
  • Uses a number line to order numbers
  • Solves problems that require ordering real data

💡 Tip: Write the numbers one under another with the places lined up, then compare column by column from the left. This keeps you from mixing up numbers of different lengths.

🤖 Ask Ghada about the lesson

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Worked examples from the Order Numbers lesson questions

Order the numbers from least to greatest: 3,452, 3,245, 3,524
  • 3,245 ، 3,452 ، 3,524
  • 3,452 ، 3,245 ، 3,524
  • 3,524 ، 3,452 ، 3,245
  • 3,245 ، 3,524 ، 3,452
✓ 3,245 ، 3,452 ، 3,524
The thousands are equal (3), so we compare the hundreds: 2, then 4, then 5. The order is: 3,245, then 3,452, then 3,524.
Order the numbers from greatest to least: 45,120, 54,210, 45,210
  • 54,210 ، 45,210 ، 45,120
  • 54,210 ، 45,120 ، 45,210
  • 45,120 ، 45,210 ، 54,210
  • 45,210 ، 54,210 ، 45,120
✓ 54,210 ، 45,210 ، 45,120
54,210 is the greatest because its ten-thousands digit is 5. Then we compare 45,210 and 45,120: in the hundreds, 2 is greater than 1.
Show more examples (3)
Which of the following numbers is the least?
  • 3,999
  • 4,001
  • 4,010
  • 4,100
✓ 3,999
3,999 has 3 in the thousands place, and all the other numbers have 4 in the thousands place, so it is the least.
What is the greatest number among: 708,615, 780,156, 708,651, 780,165?
  • 780,165
  • 780,156
  • 708,651
  • 708,615
✓ 780,165
780,156 and 780,165 are greater because their ten-thousands digit is 8, and between them 780,165 is greater because its tens digit 6 is greater than 5.
What is the least number among: 1,203,450, 1,230,450, 1,032,450, 1,302,450?
  • 1,032,450
  • 1,203,450
  • 1,230,450
  • 1,302,450
✓ 1,032,450
All the numbers have one million, so we compare the hundred thousands: 0 is the smallest, so 1,032,450 is the least.

FAQ about the Order Numbers lesson

What is the difference between ascending and descending order?

Ascending goes from least to greatest, like 120, 210, 1,020, and descending goes from greatest to least, like 1,020, 210, 120.

How do I order numbers that start with the same digit?

I compare the next place until I find a difference. Example: 3,452, 3,425, and 3,542 in ascending order are 3,425, then 3,452, then 3,542.

How do I study the lesson Order Numbers and test myself on it?

Start the lesson quiz on Study with Ghada: 10 questions from the Math Fourth Grade, Primary question bank. After each answer you'll see the right answer with an explanation, and any questions you miss move to “Review my mistakes” until you master them.

Are Study with Ghada quizzes free and aligned with the curriculum?

Yes, completely free. They're built on the Math - Grade 4 - Semester 1 lessons in the same order as the book, and every question is reviewed and approved by a teacher before students see it.

Unit 1 lessons: Place Value

⁦1-1⁩ Place Value Through Hundred Thousands ⁦1-2⁩ Place Value Through Millions ⁦1-3⁩ Problem-Solving Skill: Use the Four-Step Process ⁦1-4⁩ Compare Numbers ⁦1-6⁩ Round Numbers ⁦1-7⁩ Problem-Solving Investigation: Choose the Best Strategy All Math Fourth Grade, Primary lessons →
← ⁦1-4⁩ Compare Numbers ⁦1-6⁩ Round Numbers →