Continuing from the previous instructional activity, scholars work on mastering the skill of multiplying decimal fractions by a whole number. The method employed in the instructional activity is to convert the decimal fraction to its smallest unit (such as converting 5.1 to 51 tenths), multiplying by the whole number, then using the unit to correctly locate the decimal point.

Concepts

multiplying decimals, estimation, decimal place value

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Additional Tags

math

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Instructional Ideas

• Have learners compare strategies introduced in Lessons 11 and 12 and discuss when each strategy would be most useful
  

Classroom Considerations

• Resource suggests the use of personal white boards
• This is the 13th of 18 installments in the Grade 5 Math Module 1 series
  

Pros

• Provides sample answers to all questions
• Gives optional prompts to use in discussion sessions
  

Cons

• None

Common Core

MP8 5.NBT.A.2 5.NBT.B.7