Adding 10 Games Online Free
Add 10 to a number up to 89, like 37 + 10. The ones digit stays the same and the tens digit goes up by one.
Type answers on your keyboard, or tap the number pad.
Practise these again:
How do you add 10 to a number?
When you add 10, only the tens digit changes: it goes up by one. The ones digit stays the same. So 37 + 10 = 47, and 52 + 10 = 62.
Children who can do this quickly are ready to add any multiple of ten, like 47 + 30, in adding and subtracting tens.
How to play Adding 10
- 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 10 skills
- Finding 10 more than a number
- Place value: tens and ones
- Adding 10 without counting
Level: Grades 1–2 (ages 6–8)
Tips for adding 10
Don’t count on 10 ones. Just add one to the tens digit: 64 → 74.
On a hundred square, adding 10 is moving one row straight down.
For a single-digit number, put a 1 in front: 6 + 10 = 16.
Adding 10 questions and answers
What does “10 more” mean?
10 more than a number is that number plus 10. 10 more than 45 is 55.
Why does the ones digit stay the same?
You’re adding one ten and no ones, so only the tens change. 37 is 3 tens and 7 ones; 37 + 10 is 4 tens and 7 ones.
What grade learns adding 10?
Finding 10 more than a two-digit number in your head is a first-grade standard in the US and a Year 1–2 objective in England.