After you complete an operation, the numbers you already used disappear:
10 + 2(9)
10 + 18
Notice that the answer is written directly below the operation sign, and the numbers used are removed.
Please copy and carefully solve this problem on your paper:
5 + 3(6 + 4) =
Order of Operations Automatic Flip-Through SLIDE SHOW
Overview of the Order of Operations
© 1992, 1999 Amby Duncan-Carr All rights reserved.