Number Sense and Base Ten

1.NSBT.1Extend the number sequence to:1.NSBT.1aCount forward by ones to 120 starting at any number.1.NSBT.1bCount by fives and tens to 100, starting at any number.1.NSBT.1cRead, write and represent numbers to 100 using concrete models, standard form, and equations in expanded form.1.NSBT.1dRead and write in word form numbers zero through nineteen, and multiples of ten through ninety.1.NSBT.2Understand place value through 99 by demonstrating that:1.NSBT.2aTen ones can be thought of as a bundle (group) called a “ten”.1.NSBT.2bThe tens digit in a two-digit number represents the number of tens and the ones digit represents the number of ones.1.NSBT.2cTwo-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.1.NSBT.3Compare 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.4Add through 99 using concrete models, drawings, and strategies based on place value to:1.NSBT.4aAdd a two-digit number and a one-digit number, understanding that sometimes it is necessary to compose a ten (regroup).1.NSBT.4bAdd a two-digit number and a multiple of 10.1.NSBT.5Determine 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.6Subtract 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.
Goblins

1-on-1 AI tutoring aligned to 1.NSBT. Instant help for students, real-time insights for teachers.

Used in classrooms by 100,000+ students at Baltimore County, Plano ISD, Deer Valley USD, KIPP, and districts nationwide.

Free for teachers, forever →