Mastery Review

Mrs. Rucker made 24 tacos. Her family ate 13 of them. Then Mrs. Rucker made 12 more tacos. Which equation can be used to find t, the number of tacos she had then? 

• 24 + 13 - 12 = t
• 24 + 13 + 12 = t
• 24 - 13 + 12 = t
• 24 - 13 - 12 = t

Ansie bought 2 bags with 10 bows and 3 bags with 14 bows. She used 23 of the bows on graduation gifts she wrapped. Which equation can be used to solve for b, the number of bows Ansie has left? 

• (2 x 10) + (3 x 14) - 23 = b
• (2 x 10) + 14 - 23 = b
• 2 x 10 + 3 x (14 + 23) = b
• (2 + 10) x (3 + 14) - 23 = b

An equation has an ________ sign and an expression does not.

• an addition sign
• a subtraction sign
• an equal sign 
• a division sign

Tags

TEKS.MATH.5.4B

The total weight of a computer hard drive, a monitor, and a keyboard is 362 ounces.  The hard drive weighs 318 ounces and the monitor weighs 33 ounces.  Which equation represents the situation where k is the weight of the keyboard?

• 362 = 318 + 33 - k
• 362 = 318 + 33 + k
• 362 = 318 + k
• 362 = 318 - k

Twenty of Erin's friends each agreed to donate $5 to her fundraiser. Which equation can be used to determine d, the amount of money Erin's friends donated to her fundraiser?

• 20 ÷ d = 5
• 20 + 5 = d
• 20 × 5 = d
• 5 × d = 20

Pedro ordered 24 boxes of baseballs.  Each box contained 16 baseballs.  Pedro used 8 of these baseballs during a game.  Which equation can be used to find b, the total number of these baseballs that Pedro did NOT use during the game?

• b = (24 + 16) - 8
• b = (24 x 16) - 8
• b = (24 - 16) / 8
• b = (24 x 16) + 8

Each of the 4 adult elephants in the zoo eats about 180 pounds of food per day. Each of the 3 baby elephants eats about 90 pounds of food per day. Use the equation below to to find d, the difference between the total amount the adult elephants eat the the total amount the baby elephants eat each day.

d = (4 x 180) - (3 x 90)

• 270 pounds

• 990 pounds

• 450 pounds

• 720 pounds