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Contenido principal

## 2.NBT.A.1

Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones; e.g., 706 equals 7 hundreds, 0 tens, and 6 ones. Understand the following as special cases:

## 2.NBT.A.1a

100 can be thought of as a bundle of ten tens — called a “hundred.”

## 2.NBT.A.1b

The numbers 100, 200, 300, 400, 500, 600, 700, 800, 900 refer to one, two, three, four, five, six, seven, eight, or nine hundreds (and 0 tens and 0 ones).

## 2.NBT.A.2

Count within 1000; skip-count by 5s, 10s, and 100s.

## 2.NBT.A.3

Read and write numbers to 1000 using base-ten numerals, number names, and expanded form.

## 2.NBT.A.4

Compare two three-digit numbers based on meanings of the hundreds, tens, and ones digits, using >, =, and < symbols to record the results of comparisons.

## 2.NBT.B.5

Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.

## 2.NBT.B.6

Add up to four two-digit numbers using strategies based on place value and properties of operations.
Pronto habrá nuevas habilidades para este estándar.