Here are some free printable 3rd grade math worksheets that you can use to help your child practice their math skills:
Addition and Subtraction
1. Addition Facts to 20: [Download](https://www.math-drills.com/3rd-grade-math-worksheets/adition-facts-to-20.html)
2. Subtraction Facts to 20: [Download](https://www.math-drills.com/3rd-grade-math-worksheets/subtraction-facts-to-20.html)
3. Basic Addition and Subtraction: [Download](https://www.mathgoodies.com/worksheets/3rd-grade-addition-subtraction.html)
Multiplication and Division
1. Multiplication Facts: [Download](https://www.math-drills.com/3rd-grade-math-worksheets/multiplication-facts.html)
2. Division Facts: [Download](https://www.math-drills.com/3rd-grade-math-worksheets/division-facts.html)
3. Multiplication and Division Word Problems: [Download](https://www.mathgoodies.com/worksheets/3rd-grade-multiplication-division.html)
Fractions and Decimals
1. Basic Fractions: [Download](https://www.mathgoodies.com/worksheets/3rd-grade-fractions.html)
2. Decimals to 10: [Download](https://www.math-drills.com/3rd-grade-math-worksheets/decimals-to-10.html)
3. Comparing Fractions and Decimals: [Download](https://www.mathgoodies.com/worksheets/3rd-grade-comparing-fractions-decimals.html)
Money and Time
1. Basic Money: [Download](https://www.mathgoodies.com/worksheets/3rd-grade-money.html)
2. Time to the Quarter Hour: [Download](https://www.math-drills.com/3rd-grade-math-worksheets/time-to-the-quarter-hour.html)
3. Money Word Problems: [Download](https://www.mathgoodies.com/worksheets/3rd-grade-money-word-problems.html)
Shapes and Measurement
1. Basic Shapes: [Download](https://www.mathgoodies.com/worksheets/3rd-grade-shapes.html)
2. Measurement Conversion: [Download](https://www.math-drills.com/3rd-grade-math-worksheets/measurement-conversion.html)
3. Perimeter and Area: [Download](https://www.mathgoodies.com/worksheets/3rd-grade-perimeter-area.html)
Word Problems
1. Basic Addition and Subtraction Word Problems: [Download](https://www.mathgoodies.com/worksheets/3rd-grade-addition-subtraction-word-problems.html)
2. Multiplication and Division Word Problems: [Download](https://www.mathgoodies.com/worksheets/3rd-grade-multiplication-division-word-problems.html)
3. Mixed Word Problems: [Download](https://www.mathgoodies.com/worksheets/3rd-grade-mixed-word-problems.html)
Remember to adjust the difficulty level and content to suit your child's needs and abilities.