Trace the conditions: which branch runs? (warm-up) · Grade 7

The programs to trace

Directions: Trace each program line by line without a computer. Keep a note of every variable as it changes, then write exactly what the program prints or the final value.

• 1 What is printed?
• 1 def bigger(a, b):
• 2 if a > b:
• 3 return a
• 4 return b
• 5 print(bigger(5, 7) * 2)
• 2 What is printed?
• 1 nums = [6, 20, 2, 3, 20]
• 2 count = 0
• 3 for n in nums:
• 4 if n < 8:
• 5 count += 1
• 6 print(count)
• 3 What is printed?
• 1 age = 11
• 2 height = 158
• 3 if age >= 10 and height >= 126:
• 4 print("ride")
• 6 print("wait")
• 4 What is printed?
• 1 total = 0
• 2 for i in range(1, 6):
• 3 if i % 2 == 1:
• 4 total += i
• 5 print(total)
• 5 What is printed? Write each line.
• 1 def check(n):
• 2 if n % 2 == 0:
• 3 return "fits"
• 4 return "left over"
• 5 print(check(28))
• 6 print(check(13))
• 6 What is big at the end?
• 1 a = 20
• 2 b = 6
• 3 if a > b:
• 4 big = a
• 6 big = b