Please include justifications for each step. 10.5. Pedagogical Explorationsth1. Child's invented algorithms: A student explained her strategy for adding 56 +39.Marta:Ms. L.:Marta:Well, 5 and 3 is 8.[Interrupting] Where are the 5 and the 3?Okay, it's 50 and 30. That's like 5 tens and 3 tens. So it's 8 tens; that's 80. And80 and 6 is 86, and 4 more is 90, and 5 more onto that is 95.Her explanation implies the following steps:a) 56+39=(5x10+6)+(3×10+9)= (5x10+3×10) +(6+9)= (5+3)x10+(6+9)= 8x10+(6+9)= 80+(6+9)i)=(80+6) +9= 86+9= 86+(4+5)= (86+4)+5= 90+5<-95k)For each step, identify the property of the base-10 system or the property of operations thatjustifies the step. Some steps may require more than one property. (Adapted from Carpenter,Franke, & Levi, 2003)

We need to identify the property of base-10 system at each step.

10.5. Pedagogical Explorations 1. Child's invented algorithms: A student explained her strategy for adding 56 +39. Marta: Ms. L.: Marta: Her explanation implies the following steps: a) 56+39=(5x10+6)+(3×10+9) TUUERLee. Well, 5 and 3 is 8. [Interrupting] Where are the 5 and the 3? Okay, it's 50 and 30. That's like 5 tens and 3 tens. So it's 8 tens; that's 80. And 80 and 6 is 86, and 4 more is 90, and 5 more onto that is 95. k) =(5x10+3x10)+(6+9) = (5+3)x10+(6+9) =8x10+(6+9) = 80+(6+9) =(80+6) +9 = 86+9 = 86+(4+5) = (86+4)+5 90+5 = <-95 For each step, identify the property of the base-10 system or the property of operations that justifies the step. Some steps may require more than one property. (Adapted from Carpenter, Franke, & Levi, 2003)

10.5. Pedagogical Explorations 1. Child's invented algorithms: A student explained her strategy for adding 56 +39. Marta: Ms. L.: Marta: Her explanation implies the following steps: a) 56+39=(5x10+6)+(3×10+9) TUUERLee. Well, 5 and 3 is 8. [Interrupting] Where are the 5 and the 3? Okay, it's 50 and 30. That's like 5 tens and 3 tens. So it's 8 tens; that's 80. And 80 and 6 is 86, and 4 more is 90, and 5 more onto that is 95. k) =(5x10+3x10)+(6+9) = (5+3)x10+(6+9) =8x10+(6+9) = 80+(6+9) =(80+6) +9 = 86+9 = 86+(4+5) = (86+4)+5 90+5 = <-95 For each step, identify the property of the base-10 system or the property of operations that justifies the step. Some steps may require more than one property. (Adapted from Carpenter, Franke, & Levi, 2003)

Algebra and Trigonometry (6th Edition)

6th Edition

ISBN:9780134463216

Author:Robert F. Blitzer

Publisher:Robert F. Blitzer

ChapterP: Prerequisites: Fundamental Concepts Of Algebra

Section: Chapter Questions

Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...

See similar textbooks

Similar questions

Please explain steps and answeres
t (25-9€분
can you retype this table but using true and false this time?
I need help explaining. Please explain with words.
Please reflect on which aspects of the topics you best & worse understood. Also describe how the topics in EACH part apply (or do not apply) to an application of your choice. Maybe a short paper, essay, etcTo be clear, the format can be like:1) Describe what topics were your strengths. Explain2) Describe what topics were your weakest. Explain3) Find an area (science/ engineering/ math/ etc...) of your interest where these topics may apply. Explain how they apply or do not apply