4th grade math

What 4th graders learn in math

The Common Core focuses grade 4 on three things: multi-digit multiplication and division, fraction equivalence and adding fractions, and geometry with lines and angles. All of it leans on times tables: a child who still counts to find 7 × 8 will find every multi-digit problem slow and error-prone.

4th grade math skills, in order

What mastery looks like by the end of the year

• Multiplies 2-digit by 2-digit numbers, like 34 × 26 = 884, and checks with an estimate.
• Divides a 3- or 4-digit number by a 1-digit number, with remainders, using long division.
• Explains why 2/3 = 4/6 and decides which of 3/5 and 2/3 is bigger.
• Adds fractions with the same denominator, including mixed numbers like 2 3/8 + 1 7/8.
• Measures and draws angles with a protractor.
• Converts between units, such as 3 feet = 36 inches.

Signs your child needs extra help

• Times tables are still slow, so every multiplication or division takes far too long.
• Loses track of place value in big numbers or lines up digits wrongly.
• Gets lost in the steps of long division.
• Adds denominators when adding fractions: 1/4 + 1/4 = 2/8.
• Reads the wrong scale on a protractor.

If times tables are the problem, fix them first: it speeds up everything else. The times table and multiplication facts worksheets for grade 3 are the right starting point.

Try a 4th grade math problem

Tap a question to see the answer and how to get it.

4th grade math worksheets

Each one is a free PDF with an answer key and its own page with a preview, tips and a button to make a new version.

• 2-digit by 1-digit multiplicationGrade 4
• 2-digit by 2-digit multiplicationGrade 4
• Division with remaindersGrade 4
• Long divisionGrades 4–5
• Equivalent fractionsGrades 3–4
• Comparing fractionsGrades 3–4
• Adding and subtracting fractions with like denominatorsGrade 4
• Factors and multiplesGrade 4
• Prime numbersGrades 4–5
• Types of anglesGrade 4
• Customary unitsGrades 4–5
• Metric unitsGrades 4–5
• Area of rectanglesGrades 3–4

More 4th grade PDFs

• Rounding large numbersGrade 4
• Fractions × whole numbersGrade 4
• Adding mixed numbersGrades 4–5
• Word problems, grades 4–5Mixed
• Mixed review, grades 4–5Check for gaps

4th grade math lessons and charts

• 2-digit by 2-digit multiplicationArea model and method
• Long divisionStep by step
• Equivalent fractionsSame amount, different names
• Comparing fractionsWhich is bigger?
• Measuring anglesUsing a protractor
• Factors and multiplesPrimes, GCF and LCM
• Fractions chartFraction wall
• Angles chartTypes of angles

How to help with 4th grade math at home

Estimate before you calculate

Ask “about how much?” before every multiplication or division. 34 × 26 is about 30 × 25 = 750, so 884 is believable and 8,840 is not.

Share things out

Divide snacks, cards or money between people and talk about the remainder. Remainders make sense when there really are 3 sweets left over.

Fold paper fractions

Fold strips of paper into halves, quarters and eighths and line them up to see that 2/4 = 4/8 = 1/2.

Hunt for angles

Doors, clock hands, scissors and laptops all make angles. Is it smaller or bigger than a right angle?

See 3rd grade math for the skills that lead into this year, and 5th grade math for what comes next.