2009 Standard of Learning- 2.1

The student will

a) read, write, and identify the place value of each digit in a three-digit numeral, using numeration models;

b) round two-digit numbers to the nearest ten; and

c) compare two whole numbers between 0 and 999, using symbols (>, <, or =) and words (greater than, less than, or equal to).

Essential Knowledge and Skills (Full Curriculum Framework for this SOL)

Demonstrate the understanding of the ten-to-one relationships among ones, tens, and hundreds, using manipulatives (e.g., beans and cups, Base-10 blocks, bundles of 10 sticks).
Determine the place value of each digit in a three-digit numeral presented as a pictorial representation (e.g., a picture of Base-10 blocks) or as a physical representation (e.g., actual Base-10 blocks).
Write numerals, using a Base-10 model or picture.
Read three-digit numbers when shown a numeral, a Base-10 model of the number, or a pictorial representation of the number.
Identify the place value (ones, tens, hundreds) of each digit in a three-digit numeral.
Determine the value of each digit in a three-digit numeral (e.g., in 352, the 5 represents 5 tens and its value is 50).
Round two-digit numbers to the nearest ten.
Compare two numbers between 0 and 999 represented pictorially or with concrete objects (e.g., Base-10 blocks), using the words greater than, less than or equal to.

Textbook Correlation

SOL	Grade	Lessons	Notes
2.1a	2	5-1, 5-2, 5-3
2.1b	2	5-5 Going Further
2.1c	2	1-21	Need to include three digit numbers

Links to Related SOL

K.1 1.1 2.1 3.1 4.1 5.1

Rounding Rhyme: Find your digit, look next door: Five or higher, add one more; Four or less, let it rest.

On-Line Games and Practice:

Dositey.com: Numbers with words
Match the three digit numbers with the correct words to reveal the mystery picture.

BBC.org: Place Value
Click on the weights to make the number on the other side of the balance. Choose “hard” for appropriate numbers.

Learning Box.com: Place value with Blocks
Choose the correct base Ten Blocks to make the number shown.

Learning Box.com: Grouping by Tens
Help BT Bear catch groups of ten cubes. See how many tens you can help him catch.

WMNet.org: Rounding Numbers
Choose how high you want to round numbers to.

Mr. Nussbaum.com: Rounding Numbers
Type in the number rounded to see if you can make a shot. The students only should be shooting for 1-point shots, unless they like a challenge.

PBSkids.org: Comparing Numbers
Try and make a number bigger than Hacker’s Number

aaamath.com: Comparing Numbers
Practice comparing numbers is at the bottom of the page.

BBC.org: Ordering Numbers
Choose the numbers in the right order. Choose “hard” for appropriate numbers.

Teacher Reference:

School Health Initiative Project: Rounding Tag
Students practice rounding numbers while participating in physical activity.

School Health Initiative Project: Bounding and Rounding
Students retrieve numbers, analyze and round to the closest ten (or assigned place value according to the grade level).

ICT Games.com: Place Value Arrow Cards for Three-digit numbers
Use this interactive website to show values of numbers and how when expanded can link to standard notation.

Free UK.net: Place Value Arrow Cards for Three-digit numbers
Use this interactive website to show values of numbers and how when expanded can link to standard notation. Throw in some addition or subtraction with the symbols on the blackboard.

SEN Teacher.org: Place Value Arrow cards
Use this site to create place value arrow cards for the students.

Free Worksheets:

BBC.org: Place Value
Worksheet created to support Place Value BBC game

BBC.org: Ordering Numbers
Worksheet created to support Ordering Numbers BBC game