ALGEBRA PROPERTIES 27 I DO foldable Commutative Property
ALGEBRA: PROPERTIES #27
I DO (foldable) Commutative Property Distributive Property +, x Associative Property Identity Property +, x
I DO (foldable) ____________ Property Addition and Multiplication 7 a 4 a + 9 = ____ + b = ____ * 6 = ____ * b = ____ 2(7+4)=_____ a(b + c) = ____ Numbers _____ to a new location but NO change to the answer. Distribute the number ____ the parenthesis to the numbers _____ and solve. ____________ Property Addition and Multiplication 3 + (9 + 4)= _____ 13 + 0 = ___ a + (b + c) = _____ a + 0 = ___ 8 * (5 * 7) = _____ 7 * 1= ___ a * (b * c) = _____ a * 1 = ___ Whichever we _____ or _______ the numbers, the answer does NOT change. It ______ its _____.
Vocabulary • Commutative Property- The order in which two numbers are added or multiplied does not change their sum or product. • Associative Property- The way in which three numbers are grouped when they are added or multiplied does not change their sum or product. • Identity Property- The sum of an addend and 0 is the addend. The product of a factor and 1 is the factor. • Distributive Property- To multiply a sum by a number, multiply each addend by the number outside the parenthesis. • Properties are statements that are true for any number. • The expressions 6 x 10 and 10 x 6 are called equivalent expressions because they have the same value (commutative property).
Caution! The Commutative and Associative Properties do not apply to subtraction or division.
WE DO (notes)
YOU DO (classwork) • ADV What Board Properties • REG White Board Properties https: //www. khanacademy. org/math/pre-algebra-arith-prop/prealgebra-ditributive-property/v/the-distributive-property https: //www. khanacademy. org/math/arithmetic-home/multiply-divide/propertiesof-multiplication/v/order-doesn-t-matter-when-purely-multiplying https: //www. khanacademy. org/math/in-eighth-grade-math/rational-numbers 1/properties-rational-number/v/commutative-property-for-addition