Lesson 6.86.8 Small Group · Group 2
Group 2 · Set BSecond challenge form · new problems, same idea
Learning target I can use the commutative, associative, and identity properties to rewrite expressions, explain why the method works, and use it on a problem I have not seen before.
Why This Matters This is your challenge small group for Lesson 6.8. You can already get the answer — so in here the answer is the starting point. We ask when the method holds, when it breaks, and how you would convince someone who disagrees.
Remember6.8 Small Group · Group 2
Order and grouping can change for addition and multiplication without changing the value, but not for subtraction or division. Use properties to make friendly numbers. They work for adding and multiplying, but not for subtracting or dividing.
Words: Properties of Operations (Propiedades de las operaciones)Commutative Property (Propiedad conmutativa)Associative Property (Propiedad asociativa)Identity Property (Propiedad de identidad)Property (Propiedad)
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1Complete each step, then write the final answer.
Use properties to find 5 × 13 × 2 × 1.
Show your workFinal answer: -
2Complete each step, then write the final answer.
Use properties to find 25 × 11 × 4.
Show your workFinal answer: -
3Complete each step, then write the final answer.
Mia rewrites (n + 8) + 12 as n + 20. Which property lets her group 8 and 12 together? Type commutative or associative.
Show your workFinal answer: -
4Complete each step, then write the final answer.
Use properties to find 0.5 × 37 × 4 × 1.
Show your workFinal answer: