3.2 Estimating Decimal Products and Quotients

3.2 Estimating Decimal Products and Quotients

g n i t a m i t s E

d 7 n c i a p s t To

c u d o r P l a m Deci

s t n e i t o u Q t

en m t h a c l i l i

r Mrs. F de Math En 5th Gra Lesson Objectives By the end of todays lesson you will be able to: 1)Estimate products using mental math. 2)Estimate quotients using compatible numbers.

Estimating Products Estimate each product. 1) 7.65 3.2 2) 6.43 4.7 Estimating Products Estimate each product. 3) 4.567.02

35 4) 6.39.2 54 5) 3.2958 180

Estimating Products Josh bought 3 yards of fabric to make a flag. Fabric costs $5.35 per yard. The clerk says his total is $14.95 before tax. Did the clerk make a mistake? Estimating Products You buy 24 donuts from the Donut Emporium

in Plano. Each donut costs $.98 . Estimate the cost before tax for 2 dozen donuts? $24 Objective #1 Can you ~ estimate products using mental math? Lets Check

Check for Understanding Estimating Quotients 63=2 The first number is the dividend. The second number is the divisor. The number after the = sign is the quotient.

Estimating Quotients Name the following: 18 3 = 6 3 is the: 18 is the: 6 is the: Estimating Quotients defn: compatible numbers: -numbers easy to divide mentally

*When dividing, you can use compatible numbers to estimate quotients Estimating Quotients When you estimate the quotient: 1)Round the divisor. 2)Round the dividend to a compatible number. Estimating Quotients

Estimate the quotient using compatible numbers. 1) 14.9 2.8 2) 25.3 4.9 Estimating Quotients Estimate the quotient using compatible

numbers. 3) 35.83.8 9 4) 29.41.8 15 5) 49.64.4

10 Estimating Quotients The cost to ship 1 yearbook is $3.12. The total cost for a shipment was $62.40. Estimate how many books were in the shipment. 1) Round the divisor. 2) Round to a multiple of 3. 3) Find the quotient.

Estimating Quotients Use estimation. Is each quotient reasonable? 1) 17.9318.34 =2.15 31.4235.94=3.29 2) Estimating Quotients

Use estimation. Is each quotient reasonable? 3) 318.2744.07=78.2 4) 41.096.88=5.12 Reasonable Not Reasonable Objective #2 Can you ~ estimate quotients using compatible numbers?

Lets Check Check for Understanding Next, compare answers with a neighbor. 18) 5 19) 6 21) 15

Estimating Decimal Products and Quotients Ask yourself if you can do the following: 1)Estimate products using mental math. 2)Estimate quotients using compatible numbers.

Recently Viewed Presentations

  • SHALLOW FOUNDATIONS - kau

    SHALLOW FOUNDATIONS - kau

    Advantages Spread the load in a larger area-Increase bearing pressure Provides more structural rigidity-Reduce settlement Heavier-More resistant to uplift Distributes loads more evenly DEEP FOUNDATIONS When shallow foundations cannot carry the loads Due to poor soils conditions When upper soils...
  • QUALETRA JUST/2011/JPEN/AG/2975 With financial support from the Criminal

    QUALETRA JUST/2011/JPEN/AG/2975 With financial support from the Criminal

    agreed languages ( English, French, Italian , Spanish & Dutch) were. collected with the help of ( and validation by ) legal experts from . EULITA, CCBE and ECBA. This corpus will serve as the basis of some of the...
  • Body Paragraphs  Support the thesis statement  Provide main

    Body Paragraphs Support the thesis statement Provide main

    a. Most tricycles now have handle bars covered with plastic protectors. b. Shooting marbles is a favorite childhood game. c. Too many toys for toddlers come with very small pieces, which can be put in the mouth and can cause...
  • Digital Elevation Models - Western Washington University

    Digital Elevation Models - Western Washington University

    A map of a relatively flat area may have a contour interval of 10 feet or less. Maps in mountainous areas may have contour intervals of 100 feet or more. Contour lines point up stream. Digital Elevation Models Using elevation...
  • A practice testimony on the implementation of information

    A practice testimony on the implementation of information

    Registering software for the management of electronic patient files. Context - eHealth platform: 10 tasks ... supporting DPOs. publishing a yearly activity report. Considerations in the deliberations. Lawfullness and purpose limitation. is the processing serving a legitimate purpose?
  • Developing focus - University of East Anglia - UEA

    Developing focus - University of East Anglia - UEA

    [email protected] February 17, 2016. The workshop involves small-group and pair work ... Do get feedback on your writing and expression as well as your content - ask your supervisor, your PPD co-ordinator and the academic writing specialists in Learning Enhancement....
  • PEEKSKILL HIGH SCHOOL Forward and Upward in the Pursuit of ...

    PEEKSKILL HIGH SCHOOL Forward and Upward in the Pursuit of ...

    Peekskill Board of Education Presentation October 6, 2015 Cassandra Hyacinthe, Ed. D., Principal * * * Mission Statement The Mission of the Peekskill City School District is to educate students in a caring, inspiring environment characterized by a spirit of...
  • Tools for Analyzing DES and TDES

    Tools for Analyzing DES and TDES

    Customizable S-Boxes GUI with all intermediate results Text report of the settings and encryption process Parallel execution of encryption (for comparison) TDES : Graphical overview of the algorithm DES : All the steps (initial permutation, p-box permutation, etc) are implemented...