Grade 4 · Numbers & operations

Prime number recognition practice

Prime number recognition is a grade 4 math skill aligned to Common Core standard 4.OA.B.4: find all factor pairs for a whole number in the range 1–100, and recognize whether a number is prime or composite. Below are 8 practice questions with answers and step-by-step explanations, drawn from the 33 prime number recognition problems our math games drill.

CCSS 4.OA.B.433 questions in the bank
Sample questions

Try 8 for free

Question 1easy

Is 1515 prime or composite?

Composite.

Question 2easy

What is the next prime after 2323?

2929.

Question 3easy

Which number is prime?

3737.

Question 4easy

What is the smallest prime number?

The smallest prime number is 22.

Question 5easy

What is the next prime after 1919?

2323.

Question 6easy

What is the next prime number after 22?

The next prime after 22 is 33.

Question 7easy

What is the next prime number after 33?

The next prime after 33 is 55.

Question 8easy

What is the next prime number after 55?

The next prime after 55 is 77.

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Math games for Grade 4

Questions like these are served inside our head-to-head math games.

Balloon Pop Math gameBalloon Pop MathPop balloons. Solve math. Win!Beam Team gameBeam TeamFly your saucer over the night farm and beam up a critter for every right answer — first to 12 wins.Blaster Gate gameBlaster GateBlast through the wall. First to clear wins.Blitz Tanks gameBlitz TanksSolve math to load shells. Out-think the battalion. Last math standing wins.
Tests that cover prime number recognition:
SBACACT Aspirei-ReadySC READYVTCAP
More Grade 4 skills:
Measurement conversionsFactors and multiplesLine plotsMissing side from area or perimeterAngle measurement basicsDivisibility rulesFraction equivalence and simplificationTime and measurement conversionsAll Grade 4 practice →

Drill it inside a game.

The free placement test finds your level, then every match serves prime number recognition questions at exactly the right difficulty.