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Copyright © Ed2Net Learning, Inc.1 Estimating and Rounding to the Tens Grade 3

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Copyright © Ed2Net Learning, Inc.2 Hello! How are you? Today we are going to begin the New Chapter.

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Copyright © Ed2Net Learning, Inc.3 Estimating Quantities Benchmark number is used to estimate the number of objects without counting them.

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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.

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Copyright © Ed2Net Learning, Inc.5 Try it yourself Estimate the number of Candies in a Jar.

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Copyright © Ed2Net Learning, Inc.6 Jack has a Closet with his favorite shirts. Would the closet have 30 or 300 shirts?

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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.

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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.

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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.

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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

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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.

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Copyright © Ed2Net Learning, Inc.12 Round 33 to nearest ten. 33 is closer to 30 than 40. So, 33 rounds to 30.

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Copyright © Ed2Net Learning, Inc.13 It’s your Turn! Round $678 to nearest ten dollars.

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Copyright © Ed2Net Learning, Inc.14 Round to nearest ten. a)75 b)44

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Copyright © Ed2Net Learning, Inc.15 Find the missing digit to make the sentence true. 2█8 to rounds to 230.

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Copyright © Ed2Net Learning, Inc.16 Assessment 1. Round $4,444 to nearest ten.

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Copyright © Ed2Net Learning, Inc Alec read 148 pages of his book. To the nearest ten, how many pages has Alec read?

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Copyright © Ed2Net Learning, Inc Find the benchmark number to estimate the pages in a Spanish dictionary.

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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?

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Copyright © Ed2Net Learning, Inc Which number is greatest when rounded to nearest ten? a) b) c)

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Copyright © Ed2Net Learning, Inc Round the given number to the nearest ten. HundredsTensOnes 538

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Copyright © Ed2Net Learning, Inc Find the missing digit to make the sentence true. 9□8 rounds to 960.

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Copyright © Ed2Net Learning, Inc The Radio costs $ What is cost of radio rounded to the nearest ten dollars?

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Copyright © Ed2Net Learning, Inc Yazoo's pet, Mock weighs 82 pounds. About how much does Mock weighs to the nearest ten?

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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?

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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.

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Copyright © Ed2Net Learning, Inc.27 Excellent Work Now practice your worksheets.

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