How to Quickly Add Tens to Any 2-Digit Number?
FAQs on Adding Whole Tens to 2-Digit Numbers – Class 3 Maths Worksheet
1. How to add whole tens to 2-digit numbers?
To add whole tens to a 2-digit number, you only need to add the tens digits together while the ones digit stays the same. This method makes mental math addition much easier for Class 3 students.
- Identify the tens place: In the sum 53 + 20, the tens digits are '5' and '2'.
- Add the tens: Add the tens digits together: 5 + 2 = 7.
- Keep the ones place: The digit in the ones place, which is '3', does not change.
- Combine the results: The new tens digit is 7 and the ones digit is 3, so the answer is 73.
2. What is the fastest way to add 10s to a number?
The fastest way to add tens is to focus only on the tens place value, which is a key mental math strategy. By ignoring the ones place, you can quickly calculate the sum in your head.
For example, to solve 67 + 30:
- Think of 67 as 6 tens and 7 ones.
- Add the 3 tens from 30 to the 6 tens.
- This gives you 9 tens, which is 90.
- Finally, add back the 7 ones, giving you the final answer of 97.
3. Why is learning to add tens important for Class 3 students?
Learning to add whole tens is crucial because it builds a strong foundation in essential maths skills. This topic helps students in Class 3 Maths develop number sense and prepare for more complex calculations.
- Improves Mental Math: It teaches students to perform fast addition for kids without needing to write anything down.
- Strengthens Place Value: It reinforces the understanding of tens and units.
- Builds Confidence: Mastering this skill makes students more confident in their arithmetic abilities.
- Foundation for Higher Maths: It is a stepping stone for adding larger numbers and learning multiplication.
4. How do you practice adding whole tens?
You can practice adding whole tens using a variety of fun and effective methods. Using a practice worksheet like this one is an excellent way to reinforce the concept through repetition.
- Worksheets: Use printable addition worksheets with fill-in-the-blank and matching problems.
- Number Lines: Visualise the addition by making jumps of 10 on a printable number line.
- Mental Drills: Have a parent or teacher call out problems like '24 + 40' for quick mental answers.
- Real-World Scenarios: Use everyday objects or money to practice adding multiples of 10.
5. How can I use this worksheet at home?
This worksheet is designed for easy use at home to support your child's learning. Simply download the free PDF, print it out, and let your child solve the problems for effective maths homework practice.
- First, explain the concept using the worked example.
- Let your child attempt the Activity sections independently.
- After they finish, use the included answer key to review their work together.
- Discuss any mistakes to help them understand the concept better.
6. Does this worksheet include an answer key?
Yes, an answer key is included with this worksheet for grade 3 maths. The solutions are provided for every activity, allowing parents and teachers to quickly check the answers and provide immediate feedback to the student.
7. Is this worksheet printable?
Absolutely, this worksheet on adding whole tens is designed to be fully printable. It is available as a free PDF download, making it easy to print for classroom use, homework assignments, or extra practice at home.
8. What skills are built by this activity?
This activity builds several critical mathematical skills essential for students in Grade 3. It goes beyond simple calculation and helps develop a deeper number sense.
- Computational Fluency: Students get faster and more accurate at 2-digit number addition.
- Place Value Understanding: It reinforces the difference and relationship between the tens and ones places.
- Mental Arithmetic Speed: It is a core exercise for improving mental math addition skills.
- Problem-Solving: Activities like number line tasks teach different strategies to find the sum.
9. How does this worksheet reinforce concept retention?
This worksheet uses a mix of activities to reinforce the concept of adding multiples of 10 from different angles. By engaging students visually and numerically, it helps cement the learning pattern for long-term retention.
- Repetition: Core addition problems provide necessary practice.
- Visual Learning: The number line addition tasks help students 'see' the process of adding tens.
- Variety: Different formats like fill-in-the-blanks and matching keep students engaged.
10. What age group is it best for?
This worksheet is specifically designed for students in Class 3 / Grade 3. This typically corresponds to children who are 7 to 9 years old and are learning foundational arithmetic skills like addition without regrouping.





















