Mastering Multiplication as Scaling in 5th Grade Math

Mr. J guides fifth-grade students through a multiplication as scaling mastery check. The video begins with instructions on how to complete the activity, encouraging students to solve six problems using greater than, less than, or equal signs. Each problem is reviewed, with explanations on how multiplication by fractions or whole numbers affects the value. The video concludes with encouragement to revisit the instructional video if needed.

What should you do if you need more help understanding the concept?

• Watch the instructional video linked in the description.

• Guess the answers to the problems.

• Skip the mastery check.

• Stop studying for the day.

Tags

CCSS.1.OA.A.1

What symbol will you use to compare the multiplication problem's result to its original value?

• Greater than, less than, or equal signs

• Plus or minus

• Multiplication or division signs

• Alphabetical symbols

Tags

CCSS.3.OA.C.7

Which of the following is a key concept of multiplication as scaling?

• Multiplying by a number greater than 1 decreases value.

• Multiplying by 1 results in a decrease in value.

• Multiplying by a number less than 1 increases value.

• Multiplying by a number less than 1 decreases value.

Tags

CCSS.5.NF.B.5B

If you multiply a number by 1/2, how does it affect the number's value?

• Increases the value

• Doubles the value

• Decreases the value

• No change to the value

Tags

CCSS.5.NF.B.5B

What happens when you multiply a number by a fraction that is equal to 1?

• The number becomes zero.

• The number's value increases.

• There is no change to the number's value.

• The number's value decreases.

Tags

CCSS.5.NF.B.5B

Multiplying a number by 10/5 will result in the number's value being:

• Tripled

• Unchanged

• Halved

• Doubled

Tags

CCSS.5.NF.B.5B

What is the result of multiplying a number by a fraction greater than 1?

• Decreases the number's value

• No change to the number's value

• Makes the number negative

• Increases the number's value

Tags

CCSS.5.NF.B.5B

If a number is multiplied by 7/8, the result will be:

• Equal to the original number

• Impossible to determine

• Less than the original number

• Greater than the original number

Tags

CCSS.5.NF.B.5A

Multiplying by 8/7 results in a value that is:

• Less than the original

• Zero

• Equal to the original

• Greater than the original

Tags

CCSS.5.NF.B.5B

What should you do if you're still struggling with the concept after the mastery check?

• Only focus on the problems you got right.

• Move on to a more difficult concept.

• Give up on learning the concept.

• Review the instructional video again.