Maths Challenge!
Year 3: Adding Ones & Crossing the Tens
Ready for a Tens Challenge?
Let’s practice adding! When you add the ones digit, you’ll need to cross over into the next ten. Think carefully and write your answer in the box!
Practice Crossing the Tens!
Remember: Adding the ones might change the tens digit.
Super Brain Challenge: Adding Big Numbers and Small Numbers!
Ready for a cool maths adventure? Today, we’re going to become mental maths champions! We’ll practice adding a small number (like 4, 6, or 9) to a bigger, 3-digit number (like 348 or 567). The super tricky, super fun part is when adding makes us jump across a tens number – like going from the 30s to the 40s! Think of it like leaping over a maths hurdle! For example, if you have 237 and want to add 5, we’ll figure out how to do that in our heads!
Test Your Mental Addition Skills: 18 Questions!
Here’s your mission, should you choose to accept it! Below you’ll find 18 questions. Read each sum carefully (like 237 + 5). Think hard, work out the answer in your head, and then check if you got it right! Don’t worry if you make a mistake – that’s how we learn!
Why Is This “Crossing the Tens” Skill So Awesome?
Being a whizz at mentally adding numbers, especially when you cross the tens boundary, is like having a maths superpower!
- It makes you faster: You can solve problems quickly in your head without needing a calculator for these types of sums.
- It builds your confidence: The more you practice, the more you’ll trust your amazing brain!
- It helps with bigger maths: This skill is a building block for even trickier sums later on.
- It’s useful every day: You might use it when counting pocket money, playing games, or figuring out scores!
Tips for Grown-Ups: Supporting Your Maths Explorer
This web-app helps children practise the key objective of mentally adding a single-digit number to a 3-digit number where the calculation bridges a tens boundary (e.g., 237+5 = 242).
- Encourage “Making Ten”: Prompt children to first add to the next multiple of ten. For 237 + 5, they might think “237 + 3 = 240” and then “240 + 2 = 242”.
- Visualise: Sometimes, imagining a number line can help them see the jump across the tens.
- Praise Effort: Focus on their effort and persistence, not just getting the answer right immediately. This web-app provides 18 questions for valuable practice.
Ready for More Maths Fun?
Did you enjoy that challenge? Check out some of our other awesome maths games and practice worksheets!
