Grade 2 Math · Number and Number Sense
Virginia SOL 2.NS.2
Virginia SOL 2.NS.2 is part of the Number and Number Sense strand in Grade 2 Math (Math). Under this Standards of Learning objective, students demonstrate understanding of the ten-to-one relationships of the base 10 number system to represent, compare, and order whole numbers up to 999. Below is what 2.NS.2 covers in plain language, the specific skills it is assessed on, the key concepts to review, and how to practice 2.NS.2 for the Virginia SOL test.
What SOL 2.NS.2 means
Demonstrate understanding of the ten-to-one relationships of the base 10 number system to represent, compare, and order whole numbers up to 999.
Skills you’ll practice for 2.NS.2
- Write the three-digit whole number represented by a given model (e.g., concrete objects, pictures of base 10 blocks).
- Read, write, and represent three-digit numbers in standard form, expanded form, and word form using concrete or pictorial representations.
- Apply patterns within the base 10 system to determine and communicate the place (ones, tens, hundreds) and value of each digit in a three-digit whole number.
- Investigate and explain the ten-to-one relationships among ones, tens, and hundreds using models.
- Compose and decompose whole numbers up to 200 by making connections between models and counting strategies.
- Plot and justify the position of a given number up to 100 on a number line with pre-marked benchmarks of 1s, 2s, 5s, 10s, or 25s.
- Compare two whole numbers, each 999 or less, represented concretely, pictorially, or symbolically using words and symbols.
- Order up to three whole numbers, each 999 or less, represented concretely, pictorially, or symbolically from least to greatest and greatest to least.
Key concepts covered by 2.NS.2
- three-digit number
- base 10 blocks
- model representation
- standard form
- expanded form
- word form
- three-digit numbers
- place value
- digit value
- base 10 system
- ten-to-one relationship
- base 10 models
- compose numbers
- decompose numbers
- counting strategies
- plot numbers
- number line
- benchmarks
- justify position
- compare numbers
- greater than
- less than
- equal to
- symbols
- order numbers
- least to greatest
- greatest to least
How to study and practice SOL 2.NS.2
Start with a quick diagnostic to see whether 2.NS.2 is already solid, then work each skill above with guided notes, flashcards, and SOL-style practice questions. For official released items, see our Virginia SOL practice tests guide and how to study for the SOL test.
Related Grade 2 Math standards in Number and Number Sense
- 2.NS.1 — Utilize flexible counting strategies to determine and describe quantities up to 200, including skip counting and identifying even/odd numbers.
- 2.NS.3 — Use mathematical reasoning and justification to solve contextual problems involving partitioning models into equal-sized parts.
- 2.NS.4 — Solve problems involving counting and representing money amounts up to $2.00.
Frequently asked questions about SOL 2.NS.2
What is Virginia SOL 2.NS.2?
SOL 2.NS.2 is a Grade 2 Math Standard of Learning in the Number and Number Sense strand. It expects students to demonstrate understanding of the ten-to-one relationships of the base 10 number system to represent, compare, and order whole numbers up to 999.
What skills does SOL 2.NS.2 cover?
SOL 2.NS.2 is assessed on 8 skills: write the three-digit whole number represented by a given model (e.g., concrete objects, pictures of base 10 blocks); read, write, and represent three-digit numbers in standard form, expanded form, and word form using concrete or pictorial representations; apply patterns within the base 10 system to determine and communicate the place (ones, tens, hundreds) and value of each digit in a three-digit whole number; investigate and explain the ten-to-one relationships among ones, tens, and hundreds using models; compose and decompose whole numbers up to 200 by making connections between models and counting strategies; plot and justify the position of a given number up to 100 on a number line with pre-marked benchmarks of 1s, 2s, 5s, 10s, or 25s; compare two whole numbers, each 999 or less, represented concretely, pictorially, or symbolically using words and symbols; order up to three whole numbers, each 999 or less, represented concretely, pictorially, or symbolically from least to greatest and greatest to least.
What strand of Grade 2 Math is SOL 2.NS.2 in?
SOL 2.NS.2 belongs to the Number and Number Sense reporting strand of the Grade 2 Math Virginia Standards of Learning.
How do I study and practice for SOL 2.NS.2?
Start with a diagnostic to see whether 2.NS.2 is already solid, then work the 8 skills above with guided notes, flashcards, and SOL-style practice questions. For official released items, see the Virginia SOL practice tests guide.