# Common Core State Standard 2.NBT.8

## Number & Operations in Base Ten

### Use place value understanding and properties of operations to add
and subtract.

8. Mentally add 10 or 100 to a
given number 100–900, and mentally subtract 10 or 100 from a given
number 100–900.

#### Common Core State Standards: 2.NBT.8

Common Core State Standards:
2.NBT.8

Number & Operations in Base Ten

Use place value understanding and properties of operations to add
and subtract.

Mentally add 10 or 100 to a given number 100–900, and mentally
subtract 10 or 100 from a given number 100–900

Students add and subtract 10 from a number.
Common Core State Standards:
2.NBT.8

Number & Operations in Base Ten

Use place value understanding and properties of operations to add
and subtract.

Mentally add 10 or 100 to a given number 100–900, and mentally
subtract 10 or 100 from a given number 100–900

Students add and subtract 100 from a number.