Illustrative Mathematics
Illustrative Mathematics: Multiplying Decimals by 10
The purpose of this task is to help learners understand and explain why multiplying a decimal number by 10 shifts all the digits one place to the left. This understanding builds on work around place-value that students have done with...
Illustrative Mathematics
Illustrative Mathematics: 5.nbt Marta's Multiplication Error
This task highlights a common misconception among students deriving the rules for multiplying a number by a power of 10. Aligns with 5.NBT.A.2.