Add and Subtract Monomials

True or False? Variables and exponents MUST be the same in order to add or subtract the terms.

• True

• False

Simplify the following expression:
-10x + 15 - 3x + 2

• 13x² + 17

• -13x² + 13

• -13x + 17

• -7x + 17

Simplify the following expression:
-8x + 4x

• -12x

• -4x

• 4x

• 12x

Simplify by combining like terms:
5a + 2b - 3a + 4

• 8a + 2b + 4

• 2a + 2b + 4

• 8ab

• 4ab + 4

Subtract;
25m²n – 23m²n

• 2mn

• 2m²n

We can add two monomials only if they are like monomials

• True

• False

If we want to add two monomials we have to add the coefficients and the exponents of the literal part.

• True

• False

The coefficient of a monomial is...

• The number that multiplies the exponent

• The letters of the monomial

• The number that multiplies the literal part

• The value of x

If a letter of a monomial has no exponent, its degree is...

• 0

• -1

• 1

• It depends on the coefficient

Find the sum of 16y² and -5y².

• -11y²

• 21y²

• 11y²

• 16y² - 5y²