Multiply using the area model

Slides:



Advertisements
Similar presentations
Don’t worry!. Here is an example and reminders to help you with your homework.
Advertisements

Unit 7, Lesson 2 The Area Model for Multiplication “What do you mean, it’s the wrong kind of right?”
Multiplying and Dividing Greater Numbers
Arrays and Expanded Algorithm EQ: How can arrays help you multiply 2 digit numbers?
2-5 Example 2 Find the product of 87 and 39. Use the traditional multiplication method. 1. Estimate. 90 × 40 = 3,600 Lesson 4-13 Example 2.
Lesson 4-8 Example Find the product of 231 and 7. Estimate first. Step 1 Estimate. 200 × 7 = 1,400.
1-digit by 4-digit Multiplication
Partial Sums An Addition Algorithm.
Partial Sums An Addition Algorithm Add the hundreds ( ) Add the tens (60 +80) 140 Add the ones (8 + 3) Add the place value sums.
$100 $200 $300 $400 $100 $200 $300 $400 $300 $200 $100 Place value circle model Place value up to tens Place value hundred - thousands Place value –
A Multiplication Algorithm
Extend the use of place value disks to represent three- and four-digit by one-digit multiplication Lesson 3.8:
How to Multiply: Distributive x 62 x 60 x = 2790 Step 1: Multiply 45 by the expanded form of 62 (60+2). Step 2: Add together.
STEPS FOR MULTIPLYING A 2-DIGIT NUMBER BY ANOTHER 2-DIGIT NUMBER With Partial Products.
Lesson 4-13 Example Example 1 Find the product of 27 and 52. Use the partial products method. 1.Rewrite the problem in vertical format. 52 × 27.
How do you write the expanded form of a number? t e n s + = ?
Properties are special qualities of something. Addition and multiplication have special qualities that help you solve problems mentally = MENTAL MATH!!
How can you multiply a two digit by digit number using an area model?
$100 $200 $300 $400 $100 $200 $300 $400 $300 $200 $100 Multiply by 1 digit numbers Multiply & estimate results Multiply by 2 digit numbers Multiply.
Adding Two and Three Digit Numbers
Everyday Mathematics Partial-Differences Subtraction.
Math 5 Multiplication: 3- digit x 2-digit Instructor: Mrs. Tew Turner.
Solving 2 step equations. Two step equations have addition or subtraction and multiply or divide 3x + 1 = 10 3x + 1 = 10 4y + 2 = 10 4y + 2 = 10 2b +
Multiply 2-digit numbers using partial products. Let’s Review You can use base-ten blocks to multiply smaller numbers. Use blocks or quick pics to multiply:
Multiply using partial products. Let’s Review In 3 rd Grade you would use base-ten blocks to multiply. Use blocks or quick pics to multiply: 234 x 3 =
Multiply By 2-Digit Numbers (B) Unit 2 Lesson 6. Objectives:
Title vocabulary *Objective Name:_______________ Date:________________ Definition Content, big ideas, examples Summary.
Multiplying 2 x 2 digit numbers
Decomposing 2 digit addition
Multiplying with Area Models Multi-digit by 1 digit
Distributive Property of Multiplication 306 x 2
Multiplying 2 and 3 Digit Do you remember….?.
Multiply using the expanded form
Multiply 2-digit numbers using partial products
Multiply by multiples of 10
? 1 ten 1 ten = 10 ones How many ten?
Multiply using Distributive Property
Multiply By Two Digits Created by M. Guy.
Multiplying 2 digit numbers by multiples of 10
How to Multiply By Two Digits
Partial Products Algorithm for Multiplication
Rounding Review Tens and Hundreds
Rounding Review Tens and Hundreds
Topic 3: Fluently Multiply Multi-Digit Whole Numbers
Multiplication 2.
Area Model for Multiplication
Essential Questions & Activities
Addition Strategies 2nd Grade Parent Help.
Rounding Review Tens and Hundreds
Multiplication Multiplying 3 or more digits by 2 digits.
Multiply by multiples of 10
Partial products By: Elias and Adam.
Multiplying Multi-Digit Whole Numbers
Use Strategies and Properties to Multiply by 1-Digit Numbers
Divisibility 2,5 and 10.
Multiplying decimal number by 10,100,1000
What role does place value have in whole number operations?
MULTI-DIGIT MULTIPLICATION.
Converting from Base-n to Base-10
Adding Up in Chunks Decompose and associate number to add efficiently.
Two-digit by one-digit multiplication
Warm Up – Complete in math section of your 5-subject notebook
Multiply using the area model
1-digit by 4-digit Multiplication
Powers and expanded notation
To be able to multiply a number by 10, 100 and 1000
Two-digit by one-digit multiplication
Using Addition Properties
Presentation transcript:

Multiply using the area model

Let’s Review Write the expanded for the number using place value. 45 40 + 5

Let’s Review Use patterns to multiply. 6 x 5 = ? 30 6 x 50 = ? 300 6 groups of 5 hundreds is 30 hundreds or 3,000. 60 groups of 5 tens is 300 tens or 3,000. 6 x 500 = ? 3000 6 groups of 5 tens is 30 tens or 300. 6 groups of 5 ones is 30 ones. 60 x 50 = ? 3000

Let’s Review 43 x 6 = ? 6 40 + 3 6 240 18 = 258 Now I add the partial products. 240 + 18 I need to find 6 groups of 40 plus 6 groups of 3. I can use place value to break apart the 43.

What if both factors were 2 digit numbers 53 x 64 = ? 64 50 + 3 60 (50 x 60) 180 3000 (3 x 60) = 3,392 + Now I add the partial products. I can use place value to break apart the factors. 200 4 (50 x 4) 12 (3 x 4) + + + 3,392 =

Solve Try it Out!

What is the product of 54 and 37? 1500 + 120 + 9 = 1629

Select all the expressions that have the product of 480. Ⓐ 400 (80) Ⓑ 12 x 40 Ⓒ 30 (16) Ⓓ 24 x 20 Ⓔ 40 (8) B,C,D