Teachers, save “Number Mystery #1 (Triple Addition Addit…” to assign it to your class.

Start by tapping the button Solve the addition problems on pg. 1. Use the to write your answer. Take the answer from pg. 1 and solve the problem on pg. 2. Use the to write the answer. On pg. 3, use your answer from pg. 2 to FIND THE MYSTERY NUMBER! Use the to write the number in the rainbow box! Great job detectives! YOU CAN USE SCRATCH PAPER OR WHITEBOARD TO SOLVE THE PROBLEMS