- 1.NBT.A.1

Major StandardsSupporting StandardsAdditional Standards

Standard 1.NBT.A.1### Prerequisites for 1.NBT.A.1

### Kindergarten

### Upcoming Standards for 1.NBT.A.1

### 1st Grade

Count to 120, starting at any number less than 120. In this range, read and write numerals and represent a number of objects with a written numeral.

Part of Major Cluster 1.NBT.A

1.NBT.B.2

Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases:

1.NBT.B.2.A

10 can be thought of as a bundle of ten ones - called a "ten."

1.NBT.B.2.BThe numbers from 11 to 19 are composed of a ten and one, two, three, four, five, six, seven, eight, or nine ones.

1.NBT.B.2.CThe numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 refer to one, two, three, four, five, six, seven, eight, or nine tens (and 0 ones).

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