Numbers & Operations (Estimation Strategies for Multiplication) Page 11 Grade 4 MATH: Oregon Department of Education Standards for Practice or Progress Monitoring. OAKS testing format These problems are presented in an OAKS testing format. A passing grade is 80% This booklet will focus on the items in This booklet will focus on ONLY the items in Bold Black [4.2.3] below table. Book #5 This booklet will focus on ONLY the items in Bold Black [4.2.3) Teachers: To assure that the above standards are understood, always remind, ask and show your students: What does reasonable mean? 2.Estimation can help you know if your answer is reasonable. Teacher Information... Teacher Information... 4 th Grade all standards in (Estimation Strategies for Multiplication) will be assessed in The test samples and strand data for this booklet can be found on the Oregon State Departments of Education web site. The use of this booklet was designed for the Hillsboro School District based on HSD Power Standards along with the ODE strand categories. This booklet is paid for and furnished to teachers for instruction by the HSD. The concept of this booklet was created by Rick & Susan Richmond © Rick & Susan Richmond 2010 Revision: Original No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, without written permission from Rick & Susan Richmond and the Oregon State Department of Education and the Hillsboro School District. NUMBERS AND OPERATIONS: Develop fluency with multiplication facts and related division facts, and with multi-digit whole number multiplication Apply with fluency multiplication facts to 10 times 10 and related division facts. (NEW, NOT PRESENT IN FORMER STANDARDS)… Apply understanding of models for multiplication ( e.g., equal-sized groups, arrays, area models, equal intervals on the number line ), place value, and properties of operations ( commutative, associative, and distributive) Select and use appropriate estimation strategies for multiplication (e.g., use benchmarks, overestimate, underestimate, round) to calculate mentally based on the problem situation when computing with whole numbers Develop and use accurate, efficient and generalizable methods to multiply multi- digit whole numbers Develop fluency with efficient procedures for multiplying multi-digit whole numbers and justify why the procedures work on the basis of place value and number properties Select and use appropriate estimation strategies for multiplication (e.g., use benchmarks, overestimate, underestimate, round) to calculate mentally based on the problem situation when computing with whole numbers.

Page 1 Page 10 Do your work here: Rick and Susan Richmond ODE Standard Round the number below to the nearest ten. A.20 B.15 C.10 D What is the missing number? A.5 B.10 C.2 D.4 Rick and Susan Richmond ODE Standard X 5 20

Page 9 Page 2 Do your work here: 2.Sam almost has enough money to buy a pizza. The pizza costs $ What is a reasonable estimation of how much money Sam has? A.$15.00 B.$18.00 C.$19.00 D.$19.34 Rick and Susan Richmond ODE Standard Estimate the following problem. What is the correct estimation answer? 456 x 67 A.30,000 B.30,552 C.35,000 D.36,000

Page 8Page 3 Do your work here: 3.There are 90 bags filled with gum. There are 57 gum balls in each bag. About how many gum balls are there in all? Choose the better estimate. A.5900 B.5300 C.5400 D Estimate the product. Round the second factor to the nearest thousand, and then multiply. 6 × 6,947 The product is approximately A.42,000 B.40,000 C.32,000 D.38,000 Rick and Susan Richmond ODE Standard 4.2.3

Page 4 Page 7 Sample Practice Tests Ohio 2006 (ODE Standard 4.2.3) 7.The table shows the number of books sold at the book fair. What is a reasonable estimate of about how many books were sold? A.120 books B.100 books C.125 books D.90 books X 7.2 is about the same as... A. 30 B.25 C.45 D.35 Rick and Susan Richmond ODE Standard Do your work here: Type of BookNumber Sold Fantasy29 Mystery27 Short Stories20 Literature29 Biography14 Do your work here:

Page 6Page 5 Do your work here: Ohio Practice Test (ODE Standard There are 532 boys and 713 girls at Avondale Elementary School. About how many students attend Avondale Elementary School? A.1,000 B.1,200 C.1,400 D.1,600 6.There are about 525,600 minutes in a year. What is this number rounded to the nearest thousand? A.500,000 B.525,000 C.526,000 D.530,000 Ohio Practice Test (ODE Standard 4.2.3