0606.3. Checks for Understanding (Formative/Summative Assessment):
0606.3.3. Recognize the use of juxtaposition (such as 3x, ab) to stand for multiplication, and the convention in these cases of writing numbers before letters.
GLE 0606.3. Grade Level Expectations:
GLE 0606.3.3. Extend order of operations to include grouping symbols and exponents.