4 th Grade

Input (g) Output (h) = Output Input Function or Rule + 9 g = h g + 9 = h g + 9 = = h g + 9 = =h=16=20

(7 x t) + 5 = m Input (t)Output (m) 1(7 x ) + 5 =

(9 – s) x 3 = y Input (s)Output (y)

(5 + x) x 4 = y Input (x)Output (y)

(7 – r) x 7 = t Input (r)Output (t)

Tickets to the Fair Input:Equation:Output: It cost $3 to park at the fair. Tickets cost $6.oo each. How much will it cost a family of 4 to go to the fair? How much would it cost a family of 6? 3 + (p x 6) = cNumber of People (p)Total Cost (c) 4 $27 6 $ (4 x 6) = c

Total Miles Walked & Ran Input:Equation:Output: Sam walks 2 miles to school each day. During PE, he always runs three times as far as Max. How many miles will Sam run if Max runs 1 mile? If Max runs 5 miles? 2 + (3 x m) = sMaxs Miles (m)Sams Total Miles (s) (3 x 1) = c 3 + (3 x 5) = c

Money Left from Movie Input:Equation:Output: Gracie is going to the movie with $ A movie ticket cost $5.oo. Each box of candy cost $2.00. How much money will Gracie have left if she buys two boxes of candy at the movie? If she buys 4 boxes? $20 – 5 - (2 x c) = mBoxes of Candy (c)Money Left (m) 2 $11 4 $7 $20 – 5 - (2 x 2) = m $20 – 5 - (2 x 4) = m

(10 – d) x 2 = y Input (d)Output (y) Miranda completed the function table shown here. Find and correct her mistake.

1. Justin has $25.oo. Which function shows how much money he will have left if he buys t toys for his dog? a) (2 x t) – 25 b) (2 ÷ t) + 25 c) 25 – (2 x t) d) 20 – (2 + t)

1. Janet wrote the function below: (6 x r) – 2 = s Which set of variables does NOT make the function true? a) r = 1, s = 4 b) r = 2, s = 12 c) r = 3, s = 16 d) r = 4, s = 22

Function Tables with 2 Operations: Skills Practice Worksheets pg. 70 & 71