### Home > MC1 > Chapter 6 > Lesson 6.2.4 > Problem 6-84

6-84.

Without writing anything down, subtract **Explain **your strategy in words.

If you are having trouble, refer to the Lesson 3.1.2 Math Notes to review mental math strategies.

6-84.

Without writing anything down, subtract **Explain **your strategy in words.

If you are having trouble, refer to the Lesson 3.1.2 Math Notes to review mental math strategies.