How do you round 349 to the nearest 100? Will 349 round to 300 or 400?
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Transcript of How do you round 349 to the nearest 100? Will 349 round to 300 or 400?
![Page 1: How do you round 349 to the nearest 100? Will 349 round to 300 or 400?](https://reader036.fdocuments.us/reader036/viewer/2022081421/5697bfb51a28abf838c9d667/html5/thumbnails/1.jpg)
How do you round 349 to the nearest 100?
Will 349 round to 300 or 400?
![Page 2: How do you round 349 to the nearest 100? Will 349 round to 300 or 400?](https://reader036.fdocuments.us/reader036/viewer/2022081421/5697bfb51a28abf838c9d667/html5/thumbnails/2.jpg)
In this lesson you will learn how to round to the nearest
100 by using base ten blocks.
![Page 3: How do you round 349 to the nearest 100? Will 349 round to 300 or 400?](https://reader036.fdocuments.us/reader036/viewer/2022081421/5697bfb51a28abf838c9d667/html5/thumbnails/3.jpg)
Let’s ReviewLet’s Review
Base Ten Blocks
OnesTensHundredsThousands
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Let’s ReviewLet’s Review
Thousands Hundreds Tens Ones
2 4 6 7
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Let’s ReviewA Common Mistake
Knowing when to round up or round down.
It is important to consider the number size and the benchmark numbers when
rounding.
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Let’s ReviewCore Lesson
Rounding - To find a number that is close to a given number.
My family drove 323 miles on
vacation.
We drove about 320 miles.
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Let’s ReviewCore Lesson
1 2 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
31 32 33 34 35 36 37 38 39 40
41 42 43 44 45 46 47 48 49 50
51 52 53 54 55 56 57 58 59 60
61 62 63 64 65 66 67 68 69 70
71 72 73 74 75 76 77 78 79 80
81 82 83 84 85 86 87 88 89 90
91 92 93 94 95 96 97 98 99 100
Numbers less than the midpoint round down.
Numbers the same as or greater than the midpoint round up.
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Let’s ReviewCore Lesson
Round 345 to the nearest hundred.
345 is between 300 and 400.
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Let’s ReviewCore LessonRound 345
to the nearest 100.
100 200
300 400
The midpoint is 350.
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Let’s ReviewCore Lesson
Round 564 to the nearest 100.
564 – = 500564 + = 600
6436
564 is between 500 and 600.
The midpoint of 500 and 600 is 550.
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In this lesson you have learned how to round to the nearest
100 by using base ten blocks.
![Page 12: How do you round 349 to the nearest 100? Will 349 round to 300 or 400?](https://reader036.fdocuments.us/reader036/viewer/2022081421/5697bfb51a28abf838c9d667/html5/thumbnails/12.jpg)
Let’s ReviewGuided Practice
1). Round 349 to the nearest hundred.
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Let’s ReviewExtension Activities
Create the following numbers with base ten blocks. Round each number to the nearest 100.
165 247 1,152 85
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Let’s ReviewExtension Activities
In your math journal, explain how to determine if a number rounds up or rounds down.
Round these numbers to the nearest 100.
631 790 1,482
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Let’s ReviewQuick Quiz
1). Round 237 to the nearest 100.
2). Round 2,864 to the nearest 100.