Are you looking for a fun hands-on activity to introduce Standard Algorithm with Multiples of 10 to your 4th grade students? With these engaging math mystery message task cards, students will practice targeted math skills by multiplying multiples of 10 with multi-digit numbers using the standard multiplication algorithm and decoding the secret message! This quiz alternative will appeal to all students, including homeschool, general ed, and gifted and talented students. In this PDF, you will ge