Intro to Modular Arithmetic and Algebra Review

13 mod 12

• 1
• 12
• 13
• 25

18 mod 12

• 6
• 1.5
• 12
• 8

36 mod 10 

• 3.6 
• 10
• 6
• 26

5 mod 13

• 3
• 5
• 13
• 8

7 mod 7

• 0
• 1
• 7
• 14

Which answer is impossible for the following problem given any integer x? 
x mod 4

• 1
• 3
• 4
• 2

Which answer is impossible for the following problem given any integer x? 
x mod 6

• 2
• 4
• 8
• 0

Solve the following equation for x: 
x Mod 13 = 1

• 1
• 14
• 27
• There are infinite solutions to this equation. 

You are writing a program that you want to do something only when your variable x is an even number. Which of the following would be a correct selection statement to use?

• IF (x MOD 2 = 0)

• IF (x MOD 2 = 1)

• IF (x MOD 2 = 2)

• IF (2 MOD X = 2)

You have "a" apples. You want to equally split your apples into 7 baskets. What expression will tell you how many apples you have left over when you do this?

• 7 mod a

• a mod 7

• a - 7

• ( a - ( a mod 7 ) ) / 7

Tags

CCSS.8.EE.C.7B