💛 Using Partial Products to Multiply 2 Digit Numbers Day 70

Using Partial Products to Multiply 2 Digit Number

Introduction

Mathematicians, we have been using the rectangular model and partial products in order to multiply with 2 digit factors.  As we work today, we are going to use just the partial products strategy in order to multiply such numbers. The basics to remember with this strategy is the number of partial products you have, should match the number of rectangles we had in our rectangular models when multiplying 2 digit by 2 digit numbers.  That’s right, 4!   We should have four partial products in order to come up with our total product.  As you work, continue to think how each strategy connects to the other.

 Guided Practice

 

Stop and Jot

In your Notebook: Enter the unknown partial product in order to make the statement true.

Statements

 Answers
  1. 34 x 78 = ⬜ + 240 + 280 + 32 = ⬜
  2. 21 x 64 = 1200 + 80 +⬜ + 4 =⬜
  3. 91 x 57 = 4500 + ⬜ + 50 + 7 = ⬜
  4. 52 x 32 = 1500 + 100 + 60 +⬜ = ⬜
  5. 64 x 93 = 5400 +⬜+ 360 + 12 =⬜
  6. 38 x 12 = ⬜ + 60 + 80 +⬜ =⬜
  7. 64 x 13 = 600 + ⬜ + ⬜ + 12 = ⬜
  8. 27 x 45 = ⬜ + 100 + ⬜ + 35  = ⬜
 Check your answers when you click "next".

Independent Practice: Google Drawing

Click "Next" to view the directions and complete the activity.

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