OpenStax, Prealgebra 2e §1.2 Add Whole Numbers · Exercise 81 · Arithmetic · Whole numbers & place value
Add Whole Numbers · Exercise 81
How confident do you feel about your knowledge of the addition facts? If you are not fully confident, what will you do to improve your skills?
This is an open-ended exercise: its source gives no single answer.
OpenStax, Prealgebra 2e · §1.2 Add Whole Numbers · Exercise 81
Stuck? A gentle nudge
No hints for this one.
Your working
Check your full solution
Upload photos of your handwritten work or a PDF, and Lemma will read it and tell you whether it's right — and where it first goes wrong if not.