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Comparing 2-digit numbers

Comparing 2-digit numbers

Comparing 2-digit numbers involves evaluating the numerical value of two-digit numbers to determine which is greater, lesser, or if they are equal. Key concepts include:

  1. Place Value: Each digit in a two-digit number has a specific value based on its position. The first digit (tens place) represents multiples of 10, while the second digit (ones place) represents values from 0 to 9.

  2. Tens Comparison: When comparing two numbers, first look at the tens digits. The number with the higher tens digit is greater. For example, in 34 and 58, 5 (from 58) is greater than 3 (from 34).

  3. Ones Comparison: If the tens digits are the same, then compare the ones digits. The number with the higher ones digit is greater. For instance, between 34 and 36, both have 3 in the tens place, but 6 (from 36) is greater than 4 (from 34).

  4. Equality: If both the tens and ones digits are the same, the two-digit numbers are equal. For example, 42 and 42 are equal.

Understanding these concepts helps determine the relationship between two-digit numbers quickly and accurately.

In this article
Part 1: Greater than and less than symbols

Part 1: Greater than and less than symbols

This video teaches comparing numbers using equal, greater than, and less than symbols. It clarifies the equal sign's meaning and demonstrates using comparison symbols with numbers and expressions.

Here are the key points to learn when studying "greater than and less than symbols":

  1. Symbols:

    • Greater than (>): Indicates that the number on the left is larger than the number on the right.
    • Less than (<): Indicates that the number on the left is smaller than the number on the right.

  2. Direction:

    • The point of the symbol always points to the smaller number.
    • The open end of the symbol faces the larger number.

  3. Examples:

    • 5 > 3 (5 is greater than 3)
    • 2 < 7 (2 is less than 7)

  4. Equal to:

    • The symbols can be combined:
      • Greater than or equal to (≥)
      • Less than or equal to (≤)

  5. Number Line:

    • Understanding positioning on a number line helps visualize greater than and less than relationships.

  6. Real-life applications:

    • Used in various contexts such as comparing quantities, statistics, and inequalities.

  7. Practice:

    • Solve problems involving inequalities to reinforce understanding.

By focusing on these key points, one can grasp the fundamental concepts surrounding greater than and less than symbols.

Related topics

Numbers 0 to 120

Ones and tens

Regroup whole numbers

Comparing 3-digit numbers

Rounding

Intro to place value

How 10 relates to place value

Ways to write whole numbers (expanded form and written form)

Regrouping whole numbers

Comparing multi-digit numbers

Rounding whole numbers

Roman numerals

Part 1: Greater than and less than symbols