# Common Core: 1st Grade Math : Add and Subtract 10 to Two-Digit Numbers: CCSS.MATH.CONTENT.1.NBT.C.5

## Example Questions

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### Example Question #1 : Add And Subtract 10 To Two Digit Numbers: Ccss.Math.Content.1.Nbt.C.5

Explanation:

When we add  to a two digit number, the only number that changes in our answer is the tens position, and it will always go up by . Mentally, we can add  to the number in the tens place to find our answer.

### Example Question #2 : Add And Subtract 10 To Two Digit Numbers: Ccss.Math.Content.1.Nbt.C.5

Explanation:

When we add  to a two digit number, the only number that changes in our answer is the tens position, and it will always go up by . Mentally, we can add  to the number in the tens place to find our answer.

### Example Question #3 : Add And Subtract 10 To Two Digit Numbers: Ccss.Math.Content.1.Nbt.C.5

Explanation:

When we add  to a two digit number, the only number that changes in our answer is the tens position, and it will always go up by . Mentally, we can add  to the number in the tens place to find our answer.

### Example Question #4 : Add And Subtract 10 To Two Digit Numbers: Ccss.Math.Content.1.Nbt.C.5

Explanation:

When we add  to a two digit number, the only number that changes in our answer is the tens position, and it will always go up by . Mentally, we can add  to the number in the tens place to find our answer.

### Example Question #1 : Add And Subtract 10 To Two Digit Numbers: Ccss.Math.Content.1.Nbt.C.5

Explanation:

When we add  to a two digit number, the only number that changes in our answer is the tens position, and it will always go up by . Mentally, we can add  to the number in the tens place to find our answer.

### Example Question #6 : Add And Subtract 10 To Two Digit Numbers: Ccss.Math.Content.1.Nbt.C.5

Explanation:

When we add  to a two digit number, the only number that changes in our answer is the tens position, and it will always go up by . Mentally, we can add  to the number in the tens place to find our answer.

### Example Question #7 : Add And Subtract 10 To Two Digit Numbers: Ccss.Math.Content.1.Nbt.C.5

Explanation:

When we add  to a two digit number, the only number that changes in our answer is the tens position, and it will always go up by . Mentally, we can add  to the number in the tens place to find our answer.

### Example Question #8 : Add And Subtract 10 To Two Digit Numbers: Ccss.Math.Content.1.Nbt.C.5

Explanation:

When we add  to a two digit number, the only number that changes in our answer is the tens position, and it will always go up by . Mentally, we can add  to the number in the tens place to find our answer.

### Example Question #9 : Add And Subtract 10 To Two Digit Numbers: Ccss.Math.Content.1.Nbt.C.5

Explanation:

When we add  to a two digit number, the only number that changes in our answer is the tens position, and it will always go up by . Mentally, we can add  to the number in the tens place to find our answer.