Task# Marta's Multiplication Error

Illustrative MathematicsVaries

This task highlights a common misconception among students deriving the rules for multiplying a number by a power of 10. When students transition to multiplying decimals by powers of 10, they often generalize this 'rule' without thinking about the value that results. It is important to create dialogue around this misconception, especially during the initial stages of deriving rules for multiplying and dividing numbers by powers of 10.