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Copyright © Ed2Net Learning, Inc.1 Estimating and Rounding to the Tens Grade 3
Copyright © Ed2Net Learning, Inc.2 Hello! How are you? Today we are going to begin the New Chapter.
Copyright © Ed2Net Learning, Inc.3 Estimating Quantities Benchmark number is used to estimate the number of objects without counting them.
Copyright © Ed2Net Learning, Inc.4 Example Container A has 10 balls. Estimate the number of balls in container B, if it is 3 times as big as Container A. Container B has 30 balls.
Copyright © Ed2Net Learning, Inc.5 Try it yourself Estimate the number of Candies in a Jar.
Copyright © Ed2Net Learning, Inc.6 Jack has a Closet with his favorite shirts. Would the closet have 30 or 300 shirts?
Copyright © Ed2Net Learning, Inc.7 Round numbers to nearest ten. To round is to find the value of a number on a given Place Value. Example: 28 rounded to the nearest 10 is 30.
Copyright © Ed2Net Learning, Inc.8 Use Number Line to round to nearest ten. To round 223 to nearest ten is closer to 220 than 230. So, 223 rounds to 220 than 230.
Copyright © Ed2Net Learning, Inc.9 Example To round 228 to nearest ten is closer to 230 than 220. So, 228 rounds to 230 than 220.
Copyright © Ed2Net Learning, Inc.10 Use Place Value Models to round to nearest ten. Have a close look at the ones model. Example: Round 127 to nearest ten. Have a close look at the ones model. 7 ones is closer to 1 ten than to 0. Replace 7 ones with 1 ten. So 127 rounds to 130 hundredstensones 127
Copyright © Ed2Net Learning, Inc.11 Example Round 124 to nearest ten. Solution: Write the Place Value model of is closer to 0 than 1 ten. So, 124 rounds to 120.
Copyright © Ed2Net Learning, Inc.12 Round 33 to nearest ten. 33 is closer to 30 than 40. So, 33 rounds to 30.
Copyright © Ed2Net Learning, Inc.13 It’s your Turn! Round $678 to nearest ten dollars.
Copyright © Ed2Net Learning, Inc.14 Round to nearest ten. a)75 b)44
Copyright © Ed2Net Learning, Inc.15 Find the missing digit to make the sentence true. 2█8 to rounds to 230.
Copyright © Ed2Net Learning, Inc.16 Assessment 1. Round $4,444 to nearest ten.
Copyright © Ed2Net Learning, Inc Alec read 148 pages of his book. To the nearest ten, how many pages has Alec read?
Copyright © Ed2Net Learning, Inc Find the benchmark number to estimate the pages in a Spanish dictionary.
Copyright © Ed2Net Learning, Inc Wilson rounds a number with the digits 5, 7 and 3. To the nearest ten, the number rounds to 740. What is the number?
Copyright © Ed2Net Learning, Inc Which number is greatest when rounded to nearest ten? a) b) c)
Copyright © Ed2Net Learning, Inc Round the given number to the nearest ten. HundredsTensOnes 538
Copyright © Ed2Net Learning, Inc Find the missing digit to make the sentence true. 9□8 rounds to 960.
Copyright © Ed2Net Learning, Inc The Radio costs $ What is cost of radio rounded to the nearest ten dollars?
Copyright © Ed2Net Learning, Inc Yazoo's pet, Mock weighs 82 pounds. About how much does Mock weighs to the nearest ten?
Copyright © Ed2Net Learning, Inc The height of tallest building in California is 3,458 feet. How tall is the tower to the nearest ten feet?
Copyright © Ed2Net Learning, Inc.26 Recap In this Lesson you have read: Estimating Quantities using Benchmark Number. Rounding to nearest ten using Number Line. Rounding to nearest ten using Place Value Model. Solved Examples. Practice Problems.
Copyright © Ed2Net Learning, Inc.27 Excellent Work Now practice your worksheets.
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