Lesson: Reading and Comparing Natural Numbers Less Than 100,000

Explain that whole numbers are the counting numbers (0, 1, 2, 3, and so on). Using the

Exploring Numbers to 999,999

presentation, focus on the 'Understanding place value' and 'Reading and writing big numbers' sections.

Detail how the position of each digit in a number determines its value. For example, in the number 34,567, explain that the '3' is in the ten thousands place, the '4' in the thousands place, and so on.

Present numbers in standard form (e.g., 23,456), word form (e.g., twenty-three thousand, four hundred fifty-six), and expanded form (e.g., 20,000 + 3,000 + 400 + 50 + 6). Provide several examples for each form, ensuring numbers are less than 100,000.

Transition to comparing numbers by emphasizing the importance of looking at the largest place value first. If the digits in the largest place value are the same, move to the next largest place value.

Provide examples of comparing numbers using the greater than ( > ), less than ( < ), and equal to ( = ) symbols. For instance, compare 45,678 and 45,789, explaining why 45,678 < 45,789. Also, compare numbers with different numbers of digits, such as 9,876 and 10,000, to reinforce that a number with more digits is generally larger.

Engage students with the following questions to activate their prior knowledge and introduce key concepts. Encourage them to use vocabulary related to place value and comparison.