MathematicsFreePrintable
Expressions and Prime Numbers
A free mathematics worksheet ready for your classroom. Open in Kuraplan to grab the print-ready PDF, customize it for your students, or generate a fresh version in seconds.
Name:Date:
Expressions and Prime Numbers
Solve each clue to help the Number Lab sort its mystery numbers. Remember: a prime number has exactly two positive factors, and an expression has no equals sign.
Prime-number clues
1.The number line marks every prime number from 1 to 20. Which marked number is the only even prime?
2.A robot says, “21 is prime because it is odd.” Is the robot correct? Choose the best explanation.
- Yes. Every odd number is prime.
- No. 21 has factors 1, 3, 7, and 21.
- No. 21 is even.
- Yes. 21 has exactly two factors.
3.The lab can use the cards 13, 15, 17, and 19. Write all the prime-number cards.
4.True or false: The number 1 is prime because it has only one factor.
TrueFalse
Expression workshop
5.The lab's four code cards are 4 + n, 4 + n = 10, 3m − 2, and m = 7. Select every card that is an expression.
- 4 + n
- 4 + n = 10
- 3m − 2
- m = 7
6.A supply box contains p prime-number tokens. Write an expression for the number of tokens after 6 more are added.
7.Evaluate 2x + 1 when x = 5. Show the substitution or calculation.
8.For the expression 3a + 4, find its value when a = 2 and when a = 6. What is the difference between the two values?
9.A student claims that p + 1 is always composite whenever p is a prime number greater than 2. Is the claim true? Explain using what you know about odd and even numbers.
2 printable pages
Page 1
Page 2
About This Worksheet
Free in Kuraplan
Sign up free, grab the PDF, and customize it for your class.
Print-Ready
Formatted for standard paper. Clean layout, easy to read.
AI-Generated
Created with Kuraplan's AI, designed for real classroom use.
For Teachers & Parents
Use in classrooms, for homework, tutoring, or homeschool.
Need a custom version of this worksheet?
Kuraplan's AI generates custom worksheets in seconds — differentiated for every learner, aligned to your curriculum.
Generate Custom Worksheets — Free No credit card Curriculum-aligned Under 60 seconds
More Mathematics Worksheets
10th Grade
Linear Equation Solutions
Free
Functions and Relations Classification
Free
9th Grade
Radicals and Exponents Practice
Free
Y-Intercept Answer Key
Free
Understanding Variables Worksheet
Free
6th Grade
Properties in Expressions
Free
6th Grade
Variables in Real Life
Free
7th Grade