Tens Launch Independent Practice 3rd Grade Math • Unit 3 Lesson 14
Multiplying by Multiples of 10
Learning Target: I can multiply one-digit numbers by multiples of 10 using place value strategies.
Name:
Date:
1
Think in Tens (Unit Form)
Fill in each blank to show how tens help you multiply.
Example: \(4 \times 20\)
\(4 \times 2\) tens = 8 tens
8 tens = 80, so \(4 \times 20 = 80\)
a. \(3 \times 40\)
\(3 \times 4\) tens = tens
tens = , so \(3 \times 40 =\)
b. \(5 \times 30\)
\(5 \times 3\) tens = tens
tens = , so \(5 \times 30 =\)
c. \(6 \times 20\)
\(6 \times 2\) tens = tens
tens = , so \(6 \times 20 =\)
2
Basic Fact to Tens Power
Use the basic multiplication fact to find the product with tens.
Basic Fact: \(6 \times 3 =\) 18
\(6 \times 30 =\)
Basic Fact: \(8 \times 5 =\) 40
\(8 \times 50 =\)
Basic Fact: \(4 \times 7 =\) 28
\(4 \times 70 =\)
Basic Fact: \(9 \times 4 =\) 36
\(9 \times 40 =\)
3
Fluency Check
a. \(2 \times 40 =\)
b. \(7 \times 40 =\)
c. \(9 \times 30 =\)
d. \(5 \times 60 =\)
e. \(8 \times 30 =\)
f. \(6 \times 70 =\)
4
Problem Solving
There are 5 third grade classes at Lincoln Elementary School. Each class receives a donation of 60 packs of markers . How many packs of markers did the third grade receive in all?
Show your work or place-value thinking:
Multiplication Equation:
____ × ____ = ____
Answer with unit:
________________ packs of markers
5
Explain Your Thinking
A classmate says: "To solve \(4 \times 30\), I just do \(4 \times 3\) and tack on a zero because zero is a magic trick." tens and place value .
Tens Launch Exit Ticket Exit Ticket Lesson 14: Multiplying by Multiples of 10
Standard 3.NBT.A.3 • Independent Work (No Partner Talk)
Name:
Date: Score: / 4
1. Place Value Unit Form
Fill in the blanks to solve:
If \(3 \times 4 = 12\), then:
\(3 \times 40 = 3 \times\) tens
= tens =
2. Fast Fluency
Find each product:
a. \(4 \times 30 =\)
b. \(7 \times 20 =\)
Think: basic fact \(\times\) 10
3. Word Problem
Maya has 4 twenty-dollar bills (\(4 \times \$20\)). How much money does Maya have in all?
Equation:
Answer: $
4. Written Explanation
Explain why \(5 \times 30 = 150\) using the word tens .
Self-Check: I used my basic facts and counted groups of ten. Mastery Goal: 3 or 4 correct
Cut here for two separate half-page exit tickets
Exit Ticket Lesson 14: Multiplying by Multiples of 10
Standard 3.NBT.A.3 • Independent Work (No Partner Talk)
Name:
Date: Score: / 4
1. Place Value Unit Form
Fill in the blanks to solve:
If \(3 \times 4 = 12\), then:
\(3 \times 40 = 3 \times\) tens
= tens =
2. Fast Fluency
Find each product:
a. \(4 \times 30 =\)
b. \(7 \times 20 =\)
Think: basic fact \(\times\) 10
3. Word Problem
Maya has 4 twenty-dollar bills (\(4 \times \$20\)). How much money does Maya have in all?
Equation:
Answer: $
4. Written Explanation
Explain why \(5 \times 30 = 150\) using the word tens .
Self-Check: I used my basic facts and counted groups of ten. Mastery Goal: 3 or 4 correct
Tens Mastery Independent Practice 3rd Grade Math • Unit 3 Lesson 15
Mastering Multiples of 10
Learning Target: I can fluently multiply by multiples of 10 and explain my thinking using place value.
Name:
Date:
1
Fluency & Missing Factors
Use basic facts and place value patterns to find each unknown number.
a. \(7 \times 80 =\)
b. \(6 \times 90 =\)
c. \(4 \times 60 =\)
d. \(8 \times\) \(= 480\) Factor
e. \(9 \times\) \(= 450\) Factor
f. \(7 \times\) \(= 420\) Factor
2
Compare Products
Calculate both products, then write > , < , or = in the circle.
a. \(7 \times 50\) vs. \(8 \times 40\)
\(7 \times 50 =\) \(8 \times 40 =\)
b. \(6 \times 70\) vs. \(8 \times 50\)
\(6 \times 70 =\) \(8 \times 50 =\)
3
Real-World Problem Solving
Area Application
A rectangular playground is 9 meters wide and 80 meters long . How many square meters of sand are needed to cover the entire playground?
Show multiplication & area work:
Area = square meters
School Supplies
The principal ordered 8 boxes of pencils with 30 pencils per box, and 6 boxes of erasers with 40 erasers per box. How many supplies in all?
Show work for both items & total:
Total supplies = items
4
Place Value Justification
Explain why \(5 \times 70 = 350\). Use the concept of tens (such as "\(70 = 7\) tens") in your explanation.
Tens Mastery Exit Ticket Exit Ticket Lesson 15: Mastering Multiples of 10
Standard 3.NBT.A.3 • Individual Mastery Check (No Partner Talk)
Name:
Date: Score: / 4
1. Fluency Fact Link
Use the basic fact to solve:
Basic Fact: \(7 \times 8 =\)
\(7 \times 80 =\)
(\(7 \times 8\) tens = _____ tens)
2. Missing Factor
Find the unknown multiple of 10:
\(9 \times\) \(= 450\)
Think: \(9 \times\) \(= 45\), so the factor is tens.
3. Area Application
A rectangular gym mat is 6 feet wide and 90 feet long . What is its area?
Equation:
Area = sq ft
4. Place Value Explanation
Why does \(5 \times 70 = 350\)? Explain using groups of tens .
Self-Check: I used place value and multiplication facts independently. Mastery Goal: 3 or 4 correct
Cut here for two separate half-page exit tickets
Exit Ticket Lesson 15: Mastering Multiples of 10
Standard 3.NBT.A.3 • Individual Mastery Check (No Partner Talk)
Name:
Date: Score: / 4
1. Fluency Fact Link
Use the basic fact to solve:
Basic Fact: \(7 \times 8 =\)
\(7 \times 80 =\)
(\(7 \times 8\) tens = _____ tens)
2. Missing Factor
Find the unknown multiple of 10:
\(9 \times\) \(= 450\)
Think: \(9 \times\) \(= 45\), so the factor is tens.
3. Area Application
A rectangular gym mat is 6 feet wide and 90 feet long . What is its area?
Equation:
Area = sq ft
4. Place Value Explanation
Why does \(5 \times 70 = 350\)? Explain using groups of tens .
Self-Check: I used place value and multiplication facts independently. Mastery Goal: 3 or 4 correct
