Explain how you could use the patterns in this lesson to quickly compute
(57)(43).
10
Spørgsmål 2
2.
Jessica believes that 103 − 1 is divisible by 9. Support or refute her claim
using your work in this lesson.
From EngageNY.org of the New York State Education Department. Grade Algebra II Mathematics Module 1, Topic A, Lesson 7. Internet. Available from https://www.engageny.org/resource/algebra-ii-modul...; accessed 21/Apr/2016.