Unit 4 Review

Answer explanation

Follow the order of operations.

1. Parentheses

2. exponents

3. add then subtract (do what comes first)

Tags

CCSS.7.NS.A.3

What is the value of the expression 10 + 8² + 5(7-4)³ ÷ 5

• 41

• 53

• 101

• 209

Tags

CCSS.7.NS.A.3

Answer explanation

Follow the order of operations.

1. exponents

2. division

3. subtract then add (do what comes first)

Tags

CCSS.7.NS.A.3

Answer explanation

Look at your answer choices. After solving, which answer gets you 45?

Tags

CCSS.5.OA.A.1

CCSS.5.OA.A.2

• terms

• constants

• coefficients

• variables

Answer explanation

remember: coefficients are in front of the variables

Tags

CCSS.6.EE.A.2B

Answer explanation

multiply the 2 on the outside to everything on the inside. 2(x)-2(3)=2x-6

Tags

CCSS.6.EE.A.3

Answer explanation

GCF of 63 and 28 is 7. GCF goes on the outside and the factors you multiply by gcf go on the inside.

Tags

CCSS.6.NS.B.4

A planner assembles party favor bags filled with glow sticks and temporary tattoos for a client. There are 24 glow sticks and 30 temporary tattoos to divide evenly among the bags.

If there are no leftovers, what is the greatest number of bags the planner can assemble?

• 6 bags

• 8 bags

• 24 bags

• 30 bags

Answer explanation

The GCF of 24 and 30 is 6

The elementary school school lunch menu repeats every 25 days; the middle school lunch menu repeats every 15 days. If both schools are serving chicken tenders today, how many more days until they serve chicken tenders again?

• 5 days

• 10 days

• 40 days

• 75 days

Answer explanation

The LCM of 25 and 15 is 75

Answer explanation

LCM of 7 and 2 is 14 (you can also just multiply the denominators together). Multiply 7 by 2 and 2 by 7. Whatever you do to the bottom, do to the top.

Tags

CCSS.7.NS.A.1C