# Common Core: 2nd Grade Math : Mentally Add and Subtract 10 or 100 to a Given Number : CCSS.Math.Content.2.NBT.B.8

## Example Questions

### Example Question #21 : Mentally Add And Subtract 10 Or 100 To A Given Number : Ccss.Math.Content.2.Nbt.B.8

Explanation:

When adding any number by  the only number that will change in your answer is the tens place.

### Example Question #22 : Mentally Add And Subtract 10 Or 100 To A Given Number : Ccss.Math.Content.2.Nbt.B.8

Explanation:

When adding any number by  the only number that will change in your answer is the tens place.

### Example Question #23 : Mentally Add And Subtract 10 Or 100 To A Given Number : Ccss.Math.Content.2.Nbt.B.8

Explanation:

When adding any number by  the only number that will change in your answer is the tens place.

### Example Question #24 : Mentally Add And Subtract 10 Or 100 To A Given Number : Ccss.Math.Content.2.Nbt.B.8

Explanation:

When subtracting any number by  the only number that will change in your answer is the hundreds place.

### Example Question #25 : Mentally Add And Subtract 10 Or 100 To A Given Number : Ccss.Math.Content.2.Nbt.B.8

Explanation:

When subtracting any number by  the only number that will change in your answer is the hundreds place.

### Example Question #26 : Mentally Add And Subtract 10 Or 100 To A Given Number : Ccss.Math.Content.2.Nbt.B.8

Explanation:

When subtracting any number by  the only number that will change in your answer is the hundreds place.

### Example Question #27 : Mentally Add And Subtract 10 Or 100 To A Given Number : Ccss.Math.Content.2.Nbt.B.8

Explanation:

When subtracting any number by  the only number that will change in your answer is the hundreds place.

### Example Question #28 : Mentally Add And Subtract 10 Or 100 To A Given Number : Ccss.Math.Content.2.Nbt.B.8

Explanation:

When subtracting any number by  the only number that will change in your answer is the hundreds place.

### Example Question #29 : Mentally Add And Subtract 10 Or 100 To A Given Number : Ccss.Math.Content.2.Nbt.B.8

Explanation:

When subtracting any number by  the only number that will change in your answer is the hundreds place.