Maryland Math 1.NOS.B.5

Math1st GradeNumber and Operation Sense

The Standard

Compare two numbers within 100 by reasoning about values of tens and ones digits and the location of the numbers on a number line. Record the results of comparisons with the symbols >, =, and <.

Maryland College and Career Ready Standards for Mathematics (2025) · UNDERSTAND PLACE VALUE AND REPRESENTATIONS OF NUMBERS.

Teacher's field guide

What This Standard Means

What Students Need to Do

Students compare two numbers within 100 by looking at the tens, then the ones if the tens match. They place the numbers on a number line and write >, <, or = between them.

What Mastery Looks Like

A student can explain that 42 is greater than 38 because it has more tens. They place 42 to the right of 38 on a number line and write 38 < 42. They also write 56 = 56.

Common Misconceptions

Some students think 38 is greater than 42 because 8 is greater than 2. Others put the greater number on the left of a number line or reverse the < and > symbols.

How to Assess It

On an exit ticket, ask students to compare 47 and 52, then 65 and 65, using >, <, or =. Have them mark the numbers on a 0 to 100 number line and explain the first comparison using tens and ones.

Lesson moves

Ways to Teach It

  1. Give pairs base-ten blocks and cards labeled 26 and 62; students build both numbers, place them on a number line, and write 26 < 62.

  2. Ask, 'Which is greater, 58 or 61, and how do the tens and number line show it?' Have partners write an answer.

  3. Give partners cards labeled 24, 42, 42, and 50; each draws two, plots them, and scores a point for the correct comparison symbol.

  4. Two classes collect 38 and 43 cans; students mark the totals on a 0 to 100 number line and write 38 < 43.

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