10 More, 10 Less Games Online Free
Find 10 more or 10 less than a two-digit number. Only the tens digit changes: 10 more than 47 is 57, and 10 less is 37.
Type answers on your keyboard, or tap the number pad.
Practise these again:
How do you find 10 more or 10 less?
Change the tens digit by one and keep the ones digit the same. 10 more than 63 is 73, and 10 less than 63 is 53. On a hundred chart, that’s one row down or one row up.
Children who can do this without counting understand place value. It leads into adding and subtracting tens and two-digit addition.
How to play 10 More, 10 Less
- 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.
10 More, 10 Less skills
- Finding 10 more and 10 less than a number
- Place value: tens and ones
- Mental math within 100 without counting
Level: Grades 1–2 (ages 6–8)
Tips for 10 more and 10 less
Look only at the tens digit. 10 more: up one. 10 less: down one.
The ones digit never changes: 10 more than 38 still ends in 8.
Use a hundred chart: 10 more is the square just below, 10 less is the square just above.
10 More, 10 Less questions and answers
What grade learns 10 more and 10 less?
It’s a first-grade standard in the US Common Core (mentally find 10 more or 10 less than a two-digit number), and a Year 1 and Year 2 objective in England.