Edhesive 4.1 - 4.11

4.6 Lesson Practice Range is an example of a ______________.

function

4.7 Lesson Practice What is output by the following code? for x in range(7, 16): print(x * 2, end=" ")

14 16 18 20 22 24 26 28 30

4.10 Lesson Practice Questions 1 - 3 refer to the following code: maximum = 0 for i in range (10): n = int(input("Enter a number: ")) if (n >= 0 and n > maximum): maximum = n print(maximum) How many variables are in the program?

3

4.6 Lesson Practice What list of numbers is created by the following code? range(4, 11)

4 5 6 7 8 9 10

4.8 Lesson Practice What is output by the following code: for i in range(41, 31, -1): print(i) What is output?

All numbers from 41 to 32 counting counting backwards.

4.9 Code Practice: Question 1

out = 0 for i in range(3, 67, 3): out += i print(out)

4.7 Lesson Practice The following loop is intended to print the numbers 1, 2, 3, 4, 5.Fill in the blank: for i in _____ (1, 6): print (i)

range

4.9 Code Practice: Question 3

result = 0 for i in range(99, 0, -1): result += i print(result)

4.11 Lesson Practice ____________ run experiments using computer models.

simulations

4.9 Lesson Practice ____________ means to set a variable equal to a known value before a loop.

Initialize

4.7 Lesson Practice When do you use a for loop instead of a while loop? (Select multiple answers)

You know how many times you want the loop to run When there is a definite starting and ending point

4.10 Lesson Practice What would happen if only negative numbers are entered in the program?

Zero is output.

4.3 Code Practice: Question 1

age = int(input("How old are you?")) for i in range(1,age+1): print("**HUG**")

4.9 Code Practice: Question 2

count = 0 for x in range(20, 100, 10): count += x print(count)

4.3 Lesson Practice Suppose you change the program in the last problem so the user enters exactly 17 numbers. The loop would then be an example of a(n) _____ loop

count variable

4.7 Lesson Practice A for loop is used to replace a ________ while loop.

counting

4.9 Lesson Practice A ___________ variable is used to add up a set of values.

sum

4.10 Lesson Practice Trace the code. What does the program do?

Finds the largest positive number of the numbers entered

4.8 Code Practice: Question 3

for i in range(200, 300+1, 2): print(i)

4.7 Code Practice: Question 2

for i in range(56, 71): print(i, end=" ")

4.8 Code Practice: Question 2

for i in range(88,40,-4): print(i, end=' ')

4.5 Code Practice (dont reccomened using this)

i = 0 while True: word=input("Please enter the next word: ") if word == "STOP": break i += 1 print("#{}:You entered{}".format(i, word)) print("All done. {} words entered.".format(i))

4.1 Lesson Practice

Complete the activity.

4.9 Lesson Practice Consider the following code: start = int(input("Enter the starting number: ")) stop = int(input("Enter the ending number: ")) x = -10 sum = 0 for i in range (start, stop, x): sum = sum + i print(sum) What is output if the user enters 78 then 45?

252

4.5 Lesson Practice What are the two ways to end a loop? (Select two answers.)

Count variable Using user input

4.6 Lesson Practice The range function must have two parameters?

False

4.1 Lesson Practice We use loops to:

Repeat blocks of code

4.3 Code Practice: Question 2

i = 3 while i <=21: if i % 3 == 0: print(i) i+=1

4.9 Code Practice: Question 4

print('Enter ten temperatures please') sum = 0 for i in range(10): T = float(input()) sum = sum + T print('Sum is: ',sum)

4.5 Lesson Practice We use loops:

To repeat a section of code

4.2 Lesson Practice What is output? c = 1 sum = 0 while (c < 10): c = c + 3 sum = sum + c print (sum)

21

4.9 Lesson Practice What is output by the following code? sum = 0 for i in range (3, 15, 3): sum = sum + i print ("Sum = " +str( sum))

Sum = 30

4.1 Lesson Practice Consider the following code: num = int(input("Enter a number, negative to stop")) while (num >= 0): print ("You entered: " + str(num)) num = int(input("Enter a number, negative to stop")) print ("Done.") What is wrong?

The line num = int(input("Enter a number, negative to stop")) should be indented so it is inside the loop

4.7 Lesson Practice What is wrong with the following code? for range(7, 10): print(x)

The first line should be for x in range(7, 10):

4.11 Lesson Practice Which of the following is NOT a use of computer simulations:

To calculate the area of an oval room

4.6 Lesson Practice What list of numbers is created by the following code? range(8)

0 1 2 3 4 5 6 7

4.2 Lesson Practice What should be entered to make the loop print 60 70 80 x = 50 while (x < 80): x = x + ____ print (x)

10

4.8 Lesson Practice Consider the following code: for r in range (10, 60, 10): print("Hello") How many times is the word "Hello" output?

5

4.2 Lesson Practice What is output? Select all that apply. c = 0 while (c < 10): c = c + 5 print (c)

5 and 10

4.2 Lesson Practice What is output? Select all that apply. c = 3 while (c < 10): c = c + 2 print (c)

5, 7, 9 and 11

4.11 Lesson Practice Computer simulations were first developed during as a part of the .

Answer 1:WWII Answer 2:Manhattan Project

4.3 Lesson Practice Consider the following code: x = int(input ("Enter a value: ")) c = 0 sum = 0 while (c < 10): x = int(input ("Enter a value: ")) c = c + 1 sum = sum + x print ("\n\nSum: " + str(sum)) What type of loop is it?

Count variable loop

4.11 Lesson Practice _________ _________ _________ use random numbers made by computers to test computer models.

Monte Carlo Methods

4.8 Code Practice: Question 1

for I in range(5, 76, 5): print(I, end=" ")

4.7 Code Practice: Question 1

for i in range(20, 31): print(i, end=" ")

4.11 Lesson Practice Computer __________ are used to represent a real world situation using a computer.

models

4.1 Code Practice

name = input("Please enter a name, Nope to end ") while (name != "Nope"): print ("Nice to meet you " + name) name = input("Please enter a name, Nope to end ") print ("Done")

4.2 Code Practice: Question 2

pet = input("What pet do you have?") count = 0 while (pet!= "rock"): count +=1 print ("You have a " + str(pet) + " with a total of " + str(count) + " pet(s)") pet = input("Enter pet: ")

4.8 Lesson Practice Which range function will create a list with all odd numbers between 5 and 77?

range(5, 78, 2)

4.6 Lesson Practice n Practice Which range function creates the following list of numbers? 24 27 30 33 36 39

range(76, 60, -2)

4.2 Code Practice: Question 1

sum = 0 count = 0 while (sum <= 100): count +=1 num = int(input("Enter a number: ")) sum += num print("Sum: " + str(sum)) print("Numbers entered: " + str(count))

4.3 Lesson Practice This code loops until the user types in 17. It finds and prints the sum of all even numbers entered. n = int(input ("Enter a number, 17 to stop.")) sum = 0 while (n != 17): if (n % 2 == 0): sum = sum + n n = int(input ("Enter a number, 17 to stop.")) print ("Sum: " + str(sum)) This is an example of a(n) ____ loop

user input