Unit 3 Math Test Review

Unit 3 Math Test Review

Unit 3 Learning Goals

• Solve multi-step word problems with whole numbers using the four operations, including problems in which remainders must be interpreted.

• Represent these problems using equations with a letter standing for the unknown quantity ("n").

• Assess the reasonableness of answers using mental computation and estimation strategies including rounding.

• Determine whether an equation, using any of the four operations, is true or false by using comparative relational thinking.

• Determine the unknown whole number in an equation relating four whole numbers using comparative relational thinking.

Comparative Relational Thinking

Remember...

Multiple Select

Select all the FALSE equations.

• 40+10=25+25

• 40-10=50-25

• 15x5=60+15

• $48\div4=24\div2$
  

Multiple Choice

Use this equation: 52 + n = 45 + 27

Select the statement that completes this argument:

52 is 7 more than 45, so "n" must be ______________.

• 7 more than 27

• equal to 52-45

• equal to 52 + 27

• 7 less than 27

Multiple Choice

Select WHY THIS EQUATION is true or false without adding:

52 + 27 = 49 + 24

• True because, if we compare 52 to 27 and 49 to 24 they are exactly the same distance apart on a number line. They just have different starting and ending points.

• True because, both 52-27 and 49-24 result in the same answer of 25.

• False because, if 3 is subtracted from 52 to get 49, then, 49 and 27 more would not equal 49 and 24 more. Putting together two larger numbers is not the same as putting together two smaller numbers.

• False because 52 + 27 does not equal 49

Multiple Select

Select all the TRUE equations.

• 75-5=80-10

• 75-5 = 72-5

• 75-5 = 95-25

• 57-22 = 75-40

• 57-22 = 35 + 22

Multiple Choice

Jose solves for n using comparative relational thinking. Select all the statements that accurately describe solving for n using comparative relational thinking.

62+22 = 74 + n

• Since 22 is 52 less than 74 then, "n" will be 52 less than 62.

• Since 18 is 4 less than 22, then "n" will be 4 less than 62.

• Since 22 is 52 less than 74 then, "n" will be 52 more than 62.

• Since 74 is 52 more than 22 then, "n" will be 52 more than 62.

CUBES Strategy

• Circle the Key Numbers

• Underline the Question

• Box any Math "Action" Words

• Evaluate (what steps should I take?)

• Solve and Check (Does my answer make sense? How can I double check?)

Your Math "Action" Words

Don't forget:

The opposite of addition is subtraciton.

The opposite of multiplication is division.

Interpreting the Remainder

Do we ignore it?

Do we round up?

Is the remainder the answer?

Multiple Choice

Camilo has 128 Pokemon cards in bins. He has 7 small bins that each hold 12 cards. The rest of his bins each have 11 Pokemon cards. How many bins have 11 Pokemon cards?

• 11

• 84

• 44

• 4

Multiple Choice

Leonardo spends 72 dollars at Disney Springs. He buys 4 candy bars for $18. He then buys a Mickey Mouse hat for $10 and 4 Lego sets at the Lego Store. How much is each Lego set?

• 44 dollars

• 16 dollars

• 11 dollars

• 10 dollars

Multiple Choice

Luis brought in 395 Lego pieces and 147 Pokemon cards for the class. Ricardo brought in 8 times as many baseball cards as Luis's Pokemon cards. What is the total number of items Luis and Ricardo brought in together?

• 1,571

• 542

• 1,718

• 1,176

Multiple Choice

A family goes to Hollywood Studios. Ticket prices are $165 for each adult and $80 for each child. Parking also costs an additional $30. Which equation could be used to find the total cost, "T", for 3 adults and 6 children?

• T = (165 x 3) + (80 x 6) + 30

• T = (165 x 3) + 80 + 30

• T = (165 + 3) x (80 + 6) + 30

• T = (165 – 3) + (80 – 6) + 30

Multiple Choice

The local pet shop has 135 birds. The aquarium manager doesn’t want to put more than 8 birds in each cage. How many cages will he need in all?

• 14

• 15

• 16

• 17