Adding Tens and Ones Games Online Free
Add two-digit numbers like 34 + 25 by adding the tens, then the ones. No question needs regrouping.
Type answers on your keyboard, or tap the number pad.
Practise these again:
How do you add tens and ones?
Split each number into tens and ones. For 34 + 25, add the tens (30 + 20 = 50), then the ones (4 + 5 = 9), and put them together: 59.
In this game the ones never add to more than 9, so nothing needs regrouping. When it feels easy, move on to two-digit addition, which includes regrouping.
How to play Adding Tens and Ones
- Choose the 60-second challenge or untimed practice, then press Start.
- Type each answer on your keyboard or tap the number pad. It’s checked as soon as you’ve typed enough digits, or press ✓.
- Get one wrong and you’ll see the right answer, and the question comes back a little later.
- At the end, check your score and the facts to practise again.
Adding Tens and Ones skills
- Adding tens and ones separately
- Two-digit addition without regrouping
- Place value
Level: Grades 1–2 (ages 6–8)
Tips for adding tens and ones
Tens first, then ones: 42 + 36 → 70 + 8 = 78.
Or keep the first number whole and add the tens, then the ones: 42 + 30 = 72, then 72 + 6 = 78.
Base-ten blocks or drawings of sticks (tens) and dots (ones) make the idea clear.
Adding Tens and Ones questions and answers
What is regrouping, and why isn’t it in this game?
Regrouping is needed when the ones add to 10 or more, as in 38 + 25 (8 + 5 = 13). This game leaves those out so children can learn the tens-and-ones method first.
What is the biggest answer?
Every answer is 99 or less.
What grade learns adding tens and ones?
US first graders add within 100 using tens and ones, and second graders become fluent with it.