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Contenido principal

STANDARDS

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US-SC

Math

South Carolina Math

Grade 1: Number Sense and Base Ten

1.NSBT.1

Extend the number sequence to:

1.NSBT.1a

Not covered
Count forward by ones to 120 starting at any number.
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1.NSBT.1b

Not covered
Count by fives and tens to 100, starting at any number.
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1.NSBT.1c

Not covered
Read, write and represent numbers to 100 using concrete models, standard form, and equations in expanded form.
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1.NSBT.1d

Not covered
Read and write in word form numbers zero through nineteen, and multiples of ten through ninety.
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1.NSBT.2

Understand place value through 99 by demonstrating that:

1.NSBT.2a

Not covered
Ten ones can be thought of as a bundle (group) called a “ten”.
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1.NSBT.2b

Not covered
The tens digit in a two-digit number represents the number of tens and the ones digit represents the number of ones.
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1.NSBT.2c

Not covered
Two-digit numbers can be decomposed in a variety of ways (e.g., 52 can be decomposed as 5 tens and 2 ones or 4 tens and 12 ones, etc.) and record the decomposition as an equation.
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1.NSBT.3

Fully covered
Compare two two-digit numbers based on the meanings of the tens and ones digits, using the words greater than, equal to, or less than.

1.NSBT.4

Add through 99 using concrete models, drawings, and strategies based on place value to:

1.NSBT.4a

Not covered
Add a two-digit number and a one-digit number, understanding that sometimes it is necessary to compose a ten (regroup).
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1.NSBT.4b

Fully covered
Add a two-digit number and a multiple of 10.

1.NSBT.5

Mostly covered
Determine the number that is 10 more or 10 less than a given number through 99 and explain the reasoning verbally and with multiple representations, including concrete models.

1.NSBT.6

Not covered
Subtract a multiple of 10 from a larger multiple of 10, both in the range 10 to 90, using concrete models, drawings, and strategies based on place value.
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