I'd be happy to help you with that!
Artofit provides free printable worksheets for 3rd-grade students, and I've found some excellent math worksheets with a "minutes" theme. Here are a few:
Minutes Math Worksheets (PDF)
1. Adding Minutes: This worksheet encourages students to practice adding minutes within 60 minutes. [PDF](https://artofit.com/resources/adding-minutes-worksheet-grade-3/)
2. Subtracting Minutes: In this worksheet, students will subtract minutes within 60 minutes to solve problems. [PDF](https://artofit.com/resources/subtracting-minutes-worksheet-grade-3/)
3. Telling Time: Adding Minutes: Students will practice adding minutes to a given time to improve their telling-time skills. [PDF](https://artofit.com/resources/telling-time-adding-minutes-worksheet-grade-3/)
4. Telling Time: Subtracting Minutes: This worksheet helps students subtract minutes from a given time to practice telling time. [PDF](https://artofit.com/resources/telling-time-subtracting-minutes-worksheet-grade-3/)
5. Minutes Mixing: This worksheet combines addition and subtraction of minutes within 60 minutes. [PDF](https://artofit.com/resources/minutes-mixing-worksheet-grade-3/)
Other 3rd-Grade Math Worksheets (PDF)
If you'd like to explore more math worksheets for 3rd-grade students, Artofit has an extensive collection. Here are a few more:
1. Number Sense: This worksheet focuses on developing number sense by identifying numbers 0-100. [PDF](https://artofit.com/resources/number-sense-worksheet-grade-3/)
2. Mental Math: Practice mental math with addition, subtraction, and multiplication problems within 100. [PDF](https://artofit.com/resources/mental-math-worksheet-grade-3/)
3. Shapes and Patterns: Explore geometry and pattern recognition with this worksheet. [PDF](https://artofit.com/resources/shapes-and-patterns-worksheet-grade-3/)
4. Place Value: Develop an understanding of place value with tens and ones digits. [PDF](https://artofit.com/resources/place-value-worksheet-grade-3/)
5. Word Problems: Apply math skills to solve word problems involving addition, subtraction, multiplication, and division. [PDF](https://artofit.com/resources/word-problems-worksheet-grade-3/)
Remember to print the worksheets on a high-quality paper and use them as a supplement to your child's regular math lessons.
