Back to input mode User guide

It seems like you’re trying to submit a blank exercise. Please try to solve the exercise and then submit it!

Sign in
Login with code

Sign in

Registration Forgot password?

  Lesson

1.11. Addition and subtraction up to 20 without crossing tens – 3-term sums

Lesson statistics No cup earned
  • 0 star(s) earned
  • 0 medal(s) earned
  • 0% solved
Write test Back to curriculum

1.11. Addition and subtraction up to 20 without crossing tens – 3-term sums

LEVEL 1

  • 1.
  • 2.

LEVEL 2

  • 3.
  • 4.
  • 5.

LEVEL 3

  • 6.
  • 7.
  • 8.
  • 9.

LEVEL 4

  • 10.
  • 11.
  • 12.

LEVEL 5

  • 13.
Write test
Previous lesson Next lesson
Back to curriculum

You haven’t saved any solutions for this exercise category. .

Practice