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Justify a comparison

A learner explains and represents why one whole number is greater than, less than, or equal to another, primarily for numbers within 100, by comparing tens first and then ones, or by locating the numbers on a number line. The comparison can be recorded with >>, <<, or ==, with attention to the meaning of each symbol rather than its orientation; comparisons involving larger numbers or more abstract generalizations are not included.

Detailed Explanation: Justify a comparison

To compare two whole numbers, first compare the tens. If the tens are the same, compare the ones. Then use a comparison symbol:

  • >> means “greater than”
  • << means “less than”
  • == means “equal to”

Example: Compare (47)(47) and (52)(52).

  1. Look at the tens digits:
    • (47)(47) has 44 ten.
    • (52)(52) has 55 tens.
  2. Since 44 tens is less than 55 tens, (47)(47) is less than (52)(52).
  3. Write the comparison:
47<5247<52

This is true because (47)(47) comes before (52)(52) on a number line.

Learn by doing: Justify a comparison

Click a topic below to practice the foundational skills you'll need, learn the steps, or master this skill

    Practice with unlimited practice problems

    Base 10 Blocks - Less or Greater Than - Pictures to Symbol - Tens and Ones

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