Fast review mode: answers are shown by default so you can skim quickly. Hide them if you want to self-test.
Tip: With numbers less than 100, add the tens first and then add the ones.
For example: 12 + 16 + 22 =
(10 + 10 + 20) + (2 + 6 + 2) =
40 + 10 = 50
Join 4M+ learners. Unlock unlimited quizzes, wrong-answer tracking, flashcards + reminders, study guides, and 1-on-1 challenges.