1 / 5

Everyday Mathematics Partial-Products Multiplication

Everyday Mathematics Partial-Products Multiplication. Partial-Products Multiplication. Partial-products multiplication involves : Using the distributive property ; Thinking about expanded notation ; Using e xtended facts to calculate partial products; and

nora
Télécharger la présentation

Everyday Mathematics Partial-Products Multiplication

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Everyday MathematicsPartial-Products Multiplication

  2. Partial-Products Multiplication Partial-products multiplication involves: • Using the distributive property; • Thinking about expanded notation; • Using extended facts to calculate partial products; and • Adding partial products to find the final answer. Everyday Mathematics

  3. Partial-Products Multiplication Solve: 58 × 37 We begin by thinking about each number in expanded notation. 58 = 50 + 8 37 = 30 + 7 The key idea in partial products multiplication is to multiply each part of 58 by each part of 37. 50 × 30 50 × 7 • 8 × 30 • 8 × 7 Everyday Mathematics

  4. Partial-Products Multiplication Solve: 58 × 37 58 × 37 We can find the partial product in any order. Here we start with 50 × 30. We add the partial productstogether to find the answer. 50 × 30 50 × 7 8 × 30 8 × 7 • Multiply: 1,500 350 240 + 56 2,146 Everyday Mathematics

  5. Partial-Products Multiplication When children use partial-products they practice a variety of skills related to number sense and algebraic reasoning. For example: • Identifying the place value of digits; • Thinking about numbers in expanded notation; • Applying the distributive property; • Using multiplication fact extensions such as 50 × 30; and • Adding to find the product. If children work from left to right, which is generally their inclination, they begin the problem solving process with a reasonable estimate of what the final answer should be. Everyday Mathematics

More Related