Operations and Algebraic Thinking

Use comparative relational thinking to determine whether the following equation is true or false.

50 + 24 = 47 + 27

• True

• False

Use comparative relational thinking to determine whether the following equation is true or false.  Justify your answer by using comparative relational thinking.

                             45 x 8 = 45 x (4 x 2)

• True

• False

Use comparative relational thinking to solve the following equation for the unknown whole number. 

                          

72 + n = 75 + 52

Use comparative relational thinking to solve the following equation for the unknown whole number. 

46 – n = 44 - 16

Begin with the number 60.  Use the rule “subtract 4”.  Write the 5th terms for the numerical pattern.

What are the next 5 terms for the numerical pattern “starting at 4, multiply by 2 then subtract 3”.

• 5, 7, 11, 19, 35

•  5, 7, 11, 19, 33

• 5, 7, 13, 18, 31

• 8, 6, 10, 8, 13

His boat can hold a maximum of 9 passengers.  A group of 26 children and 10 adults want to go on a boat ride.  How many trips will Zachary have to make so that everyone gets a chance to ride on the boat? 

Enter the unknown number that makes this equation true.

8x8 = ?

• 64

• 16

• 46

• 56

If 4 x 30 = 120, then what is 30 x 4?

• 120

• 43

• 34

• 12

What multiplication sentence does the array below show?
X X X X X X 
X X X X X X
X X X X X X

• 6 X 6 = 36

• 3 X 6=18

• 6 X 3 = 81

• 6 X 3 = 18