Mastering Decimal Multiplication Techniques

This video tutorial covers multiplying decimals by whole numbers, focusing on sixth-grade standards. It includes examples of multiplying decimals like 0.83 by 4 and 14.23 by 3, with checks for reasonableness. The tutorial also explains annexing zeros in products and provides guided practice with real-world problems, such as calculating the weight of hummingbirds and determining change from a purchase.

Why is it important to estimate the product when multiplying decimals by whole numbers?

• To check if the decimal point is in the correct place

• To ensure the numbers are whole

• To make the multiplication easier

• To avoid using a calculator

Tags

CCSS.5.NBT.B.7

When multiplying 0.83 by 4, what should the approximate answer be?

• 0.083

• 33.2

• 3.32

• 0.332

Tags

CCSS.5.NBT.B.7

In the example of multiplying 14.2 by 3, how many decimal places should the answer have?

• None

• Three

• One

• Two

Tags

CCSS.5.NBT.B.7

What is the product of 0.95 and 4?

• 0.38

• 38

• 3.8

• 0.095

Tags

CCSS.6.NS.B.3

What does it mean to annex a zero in the product?

• To add a zero at the beginning or end of a decimal

• To remove a zero from the product

• To multiply by zero

• To divide by zero

Tags

CCSS.5.NBT.B.7

If you multiply 0.012 by 4, what is the correct product?

• 0.0012

• 0.048

• 0.0048

• 0.12

Tags

CCSS.6.NS.B.3

How many decimal places should the product of 0.02 and 3 have?

• Three

• Two

• One

• None

Tags

CCSS.5.NBT.B.7

What is the product of 0.12 and 8?

• 0.96

• 9.6

• 0.012

• 1.2

Tags

CCSS.6.NS.B.3

How can thinking of decimals like money help in multiplication?

• It simplifies the multiplication process

• It eliminates the need for decimals

• It changes the value of the numbers

• It makes the problem more relatable

Tags

CCSS.5.NBT.B.7

What is the product of 0.045 and 11?

• 0.0045

• 4.95

• 0.45

• 0.495

Tags

CCSS.6.NS.B.3