Math Strategies for 5th Grade: Multiplying Decimals Activities

1. “Spotlight on Math”5th Grade2014-2015

2. Strategies for Multiplying Decimals • Using place value mat for multiplying decimals with powers of 10. • Using place value mat for multiplying decimals and whole numbers. • Using place value mat for multiplying decimals and whole numbers (with regrouping) • Using area model to multiply decimals and whole numbers. • Explanation of tape models

3. A Typical Day in 5th Grade MATH Class… • Daily Math- Math 4 Today • Fluency Sprints-worksheets & oral • Lesson of the Day- GC and incls. guided, group and independent practice • Workstations • Interactive Notebooks

4. Draw arrows on your place value mat to find the value of 0.04 x 10 0.04 x 10 = _____ tenths Draw arrows on your place value mat to find the value of 0.004 x 10 0.004 x 10 = _____ hundredths Why does the digit move one place to the left?

5. 3 x 0.2 Show 3 groups of 2 tenths on your place value chart. How many tenths do you have in all? Write the solution as a number sentence.

6. 3 x 0.3 Show 3 groups of 3 tenths on your place value chart. How many tenths do you have in all? Write the solution as a number sentence.

7. 4 x 0.3 Show 4 groups of 3 tenths on your place value chart. How many tenths do you have in all? Write the solution as a number sentence.

8. 2 x 0.43 Let’s solve using the area model. Write 0.43 in expanded form 0.4 + 0.03 2 0.8 + 0.06 = 0.86 Write the products of each part here Find the sum

9. 4 x 0.423 Let’s solve using the area model. Write 0.423 in expanded form 0.4 + 0.02 + 0.003 4 1.6 + 0.08 + 0.012 = 1.692 Write the products of each part here Find the sum (this time you have to regroup)

10. Online Resources We would like to thank you for coming tonight!