# Common Core: 1st Grade Math : Working with Addition and Subtraction Equations

## Example Questions

### Example Question #1 : Understand The Equal Sign, Determine If Equations Are True Or False: Ccss.Math.Content.1.Oa.D.7

Which of the equations is TRUE?

Explanation:

Both  and  equal . So these two equations equal each other. , and . Because none of these equations equal , they can’t be equal to

### Example Question #2 : Understand The Equal Sign, Determine If Equations Are True Or False: Ccss.Math.Content.1.Oa.D.7

Which of the equations is TRUE?

Explanation:

Both  and  equal . So these two equations equal each other. , and . Because none of these equations equal , they can’t be equal to

### Example Question #3 : Understand The Equal Sign, Determine If Equations Are True Or False: Ccss.Math.Content.1.Oa.D.7

Which of the equations is TRUE?

Explanation:

Both  and  equal . So these two equations equal each other. , and . Because none of these equations equal , they can’t be equal to

### Example Question #4 : Understand The Equal Sign, Determine If Equations Are True Or False: Ccss.Math.Content.1.Oa.D.7

Which of the equations is TRUE?

Explanation:

Both  and  equal . So these two equations equal each other. , and . Because none of these equations equal , they can’t be equal to .

### Example Question #5 : Understand The Equal Sign, Determine If Equations Are True Or False: Ccss.Math.Content.1.Oa.D.7

Which of the equations is TRUE?

Explanation:

Both  and  equal . So these two equations equal each other. , and . Because none of these equations equal , they can’t be equal to

### Example Question #1401 : Numbers And Operations

Which of the equations is TRUE?

Explanation:

Both  and  equal . So these two equations equal each other.  , and . Because none of these equations equal , they can’t be equal to

### Example Question #7 : Understand The Equal Sign, Determine If Equations Are True Or False: Ccss.Math.Content.1.Oa.D.7

Which of the equations is TRUE?

Explanation:

Both  and  equal . So these two equations equal each other.  , and . Because none of these equations equal , they can’t be equal to

### Example Question #8 : Understand The Equal Sign, Determine If Equations Are True Or False: Ccss.Math.Content.1.Oa.D.7

Which of the equations is TRUE?

Explanation:

Both  and  equal . So these two equations equal each other. , and . Because none of these equations equal , they can’t be equal to

### Example Question #1 : Working With Addition And Subtraction Equations

Which of the equations is TRUE?

Explanation:

Both  and  equal . So these two equations equal each other. , and . Because none of these equations equal , they can’t be equal to

### Example Question #10 : Understand The Equal Sign, Determine If Equations Are True Or False: Ccss.Math.Content.1.Oa.D.7

Which of the equations is TRUE?