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Contenido principal

STANDARDS

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US-SC

Math

South Carolina Math

Grade 2: Number Sense and Base Ten

2.NSBT.1

Understand place value through 999 by demonstrating that:

2.NSBT.1a

Fully covered
100 can be thought of as a bundle (group) of 10 tens called a “hundred”.

2.NSBT.1b

Fully covered
The hundreds digit in a three-digit number represents the number of hundreds, the tens digit represents the number of tens, and the ones digit represents the number of ones.

2.NSBT.1c

Mostly covered
Three-digit numbers can be decomposed in multiple ways (e.g., 524 can be decomposed as 5 hundreds, 2 tens and 4 ones or 4 hundreds, 12 tens, and 4 ones, etc.).

2.NSBT.2

Fully covered
Count by tens and hundreds to 1,000 starting with any number.

2.NSBT.3

Partially covered
Read, write and represent numbers through 999 using concrete models, standard form, and equations in expanded form.

2.NSBT.4

Fully covered
Compare two numbers with up to three digits using words and symbols (i.e., >, =, or <).

2.NSBT.5

Partially covered
Add and subtract fluently through 99 using knowledge of place value and properties of operations.

2.NSBT.6

Fully covered
Add up to four two-digit numbers using strategies based on knowledge of place value and properties of operations.

2.NSBT.7

Mostly covered
Add and subtract through 999 using concrete models, drawings, and symbols which convey strategies connected to place value understanding.

2.NSBT.8

Not covered
Determine the number that is 10 or 100 more or less than a given number through 1,000 and explain the reasoning verbally and in writing.
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