Properties of Equality

Identify the property of equality being defined:

1.) Any number or expression is equal to itself.

Tags

CCSS.7.EE.A.1

Identify the property of equality being defined:

2.) If x = y, then y can be substituted for x in any expression containing x in the equation.

Tags

CCSS.7.EE.A.1

Identify the property of equality being defined:

3.) The equality is still true if the same number is added to both sides of the equation.

Tags

CCSS.HSA.REI.A.1

Identify the property of equality being defined:

4.) If the 1st number is equal to the 2nd number, the 2nd number is equal to the 3rd number, then the 1st number is equal to the 3rd number.

Tags

CCSS.6.EE.B.6

Identify the property of equality being defined:

5.) The equality is still true if the same number is multiplied to both sides of the equation.

Tags

CCSS.HSA.REI.A.1

Identify the property of equality being defined:

6.) The number or expressions can be interchanged.

Tags

CCSS.HSA.REI.A.1

Name the property of equality illustrated in each statement.

If x + 3 = 5, then 5 = x + 3.

Name the property of equality illustrated in each statement.

If a = 2+1, and 2+1 = 3 then a = 3.

Tags

CCSS.6.EE.B.5

Name the property of equality illustrated in each statement.

If 9 + a = 12,

then 9 + a + (-9) = 12 + (-9).

Tags

CCSS.HSA.REI.A.1

Name the property of equality illustrated in each statement.

If r = 5,

then 8r - 1 = 8(5) - 1 = 40 - 1 = 39.

Tags

CCSS.HSA.REI.A.1