This math topic focuses on identifying prime numbers from a pair of numbers. It involves comparing two numbers and determining which one is a prime number. The problems progress from easier pairings to more challenging ones, enhancing the learner's ability to recognize prime numbers in various contexts. This is part of a broader unit that introduces factoring and prime numbers.
Work on practice problems directly here, or download the printable pdf worksheet to practice offline.
Practice:
Which Number of a Pair is Prime
Complete these online problems with 80% or 4 correct answers in a row. Results are immediate.
Which of these two numbers is a prime number?
19,25
Which Number of a Pair is Prime Worksheet
| Math worksheet on 'Which Number of a Pair is Prime (Level 1)'. Part of a broader unit on 'Factoring and Venn Factor Diagrams - Practice' Learn online: app.mobius.academy/math/units/factoring_and_venn_diagrams_practice/ |
1
| Which of these two numbers is a prime number? |
| 29,35 |
a
| 29 |
b
| 35 |
2
| Which of these two numbers is a prime number? |
| 7,9 |
a
| 7 |
b
| 9 |
3
| Which of these two numbers is a prime number? |
| 25,31 |
a
| 25 |
b
| 31 |
4
| Which of these two numbers is a prime number? |
| 13,15 |
a
| 13 |
b
| 15 |
5
| Which of these two numbers is a prime number? |
| 27,29 |
a
| 27 |
b
| 29 |
6
| Which of these two numbers is a prime number? |
| 11,26 |
a
| 11 |
b
| 26 |
7
| Which of these two numbers is a prime number? |
| 19,25 |
a
| 19 |
b
| 25 |