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#### Description:

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Marta made an error while finding the product $84.15 \times 10$. In your own words, explain Marta’s misunderstanding. Please explain what she should do...

#### Subjects:

• Mathematics > General
• Education > General

#### Keywords:

Informal Education,NSDL,Upper Elementary,Grade 5,oai:nsdl.org:2200/20131110173546987T,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-103,Elementary School,Vocational/Professional Development Education,Mathematics,Education

English

#### Access Privileges:

Public - Available to anyone

Creative Commons Attribution Non-Commercial Share Alike

#### Collections:

None
Update Standards?

#### CCSS.Math.Content.5.NBT.A.2: Common Core State Standards for Mathematics

Explain patterns in the number of zeros of the product when multiplying a number by powers of 10, and explain patterns in the placement of the decimal point when a decimal is multiplied or divided by a power of 10. Use whole-number exponents to denote powers of 10.
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