1.2.d MA.1.1.4 1.2.e 1.2.f 1.2.g

Compare and Order Numbers 1st Grade

Texas Essential Knowledge and Skills (TEKS): 1.2.e
use place value to compare whole numbers up to 120 using comparative language;
Texas Essential Knowledge and Skills (TEKS): 1.2.f
order whole numbers up to 120 using place value and open number lines; and
Texas Essential Knowledge and Skills (TEKS): 1.2.g
represent the comparison of two numbers to 100 using the symbols >, <, or =.
Texas Essential Knowledge and Skills (TEKS): 1.2.d
generate a number that is greater than or less than a given whole number up to 120;
Florida - Benchmarks for Excellent Student Thinking: MA.1.1.4
Plot, order and compare whole numbers up to 100

Compare Numbers

Compare: To compare two numbers, we find which one is greater and which one is less. Or the two numbers may be equal. Equal means the same.

We look at the tens and the ones to compare. This is called place value.
Step 1: Look at the tens. More tens means a greater number.
Step 2: If the tens are the same, look at the ones.
Step 3: Say greater than, less than, or equal to.

Example:

Look at the tens. 115 has 11 tens. 109 has 10 tens.

115

109

11 tens is more than 10 tens. So 115 is greater than 109.
We can also say 109 is less than 115.

We can use a sign to show how two numbers compare. These signs are also called symbols.

>	greater than	52 > 46
<	less than	46 < 52
=	equal to	35 = 35

The open side faces the greater number. The point faces the number that is less.

Example:

Look at the tens. 73 has seven tens. 78 has seven tens. The tens are the same.

Look at the ones. 73 has three ones. 78 has eight ones. Three is less than eight. So 73 is less than 78.

We use the less than sign. The point faces 73.

73 < 78

Find and Order Numbers

We can find a number that is greater than or less than another number.
Numbers that come after it when we count are greater.
Numbers that come before it when we count are less.

Example:

Count on from 87: 88, 89, 90, 91. These numbers come after 87. So they are greater than 87.

One answer is 90. 90 has nine tens. 87 has eight tens. So 90 is greater than 87. 88, 100, and 120 are greater than 87 too.

90 > 87

Count back from 64: 63, 62, 61. These numbers come before 64. So they are less than 64.

One answer is 50. 50 has five tens. 64 has six tens. So 50 is less than 64. 63, 30, and 0 are less than 64 too.

50 < 64

We can put numbers in order. Look at the tens. Then look at the ones. Put the numbers from least to greatest, or from greatest to least.
An open number line has no numbers on it yet. We mark only the numbers we need. Numbers on the left are less. Numbers on the right are greater.

Example:

Look at the tens. 85 has eight tens. 58 and 53 have five tens. So 85 is the greatest.

58 and 53 have the same tens. So look at the ones. 53 has three ones. 58 has eight ones. So 53 is the least.

We mark the numbers on an open number line. Least to greatest: 53, 58, 85.

Example:

Look at the tens. 97 has nine tens. 105 has 10 tens. 112 has 11 tens.

We mark the numbers on an open number line. The number with the fewest tens goes on the left.

Least to greatest: 97, 105, 112.
Greatest to least: 112, 105, 97.

Compare and Order Numbers

Texas Essential Knowledge and Skills (TEKS): 1.2.e

use place value to compare whole numbers up to 120 using comparative language;

Texas Essential Knowledge and Skills (TEKS): 1.2.f

order whole numbers up to 120 using place value and open number lines; and

Texas Essential Knowledge and Skills (TEKS): 1.2.g

represent the comparison of two numbers to 100 using the symbols >, <, or =.

Texas Essential Knowledge and Skills (TEKS): 1.2.d

generate a number that is greater than or less than a given whole number up to 120;

Florida - Benchmarks for Excellent Student Thinking: MA.1.1.4

Plot, order and compare whole numbers up to 100

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