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Grade 4 prime or composite worksheets

4.OA.B.4 Number and operations

Printable prime or composite worksheets for grade 4, aligned to Common Core standard 4.OA.B.4. Exactly two factors, or more.

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Sample problems

These eight are one sample at medium difficulty — the generator makes a different set every time.

A worked example

Every problem on the answer key can show its steps like this — turn on “Show steps” before downloading.

About these worksheets

Number work rewards repetition with different numbers rather than the same sheet twice. Every sheet is generated fresh, so you can print a new one on the same skill as often as you need — different numbers, same difficulty.

Pick how many problems you want and whether they should be easy, medium or hard, then download a PDF with a matching answer key. The key can show the worked steps for every problem, which is what a parent needs to see where a wrong answer went wrong.

More grade 4 worksheets

Number and operations

• Multiply 2-digit by 1-digit
• Multiply 2-digit by 2-digit
• Long division
• Rounding multi-digit numbers
• Adding multi-digit numbers
• Subtracting multi-digit numbers
• Comparing large numbers
• Expanded form of large numbers
• Listing factors
• Division with remainders
• Dividing larger numbers
• Number patterns
• Multiplying by 10, 100 and 1000

Fractions and decimals

• Add fractions, like denominators
• Equivalent fractions
• Comparing fractions, unlike denominators
• Subtract fractions, like denominators
• Mixed numbers and improper fractions
• Multiply a fraction by a whole number
• Decimals and fractions
• Comparing decimals

Word problems

• Area and perimeter problems
• Times as many

Measurement and geometry

• Angles on a line
• Converting units

All 26 grade 4 skills