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4,597, what does this number really mean? The 5 in the hundreds place means 5 x 100 4,000 + 500 + 90 + 7 359 The 5 in the tens place means 5 x 10 300.

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Presentation on theme: "4,597, what does this number really mean? The 5 in the hundreds place means 5 x 100 4,000 + 500 + 90 + 7 359 The 5 in the tens place means 5 x 10 300."— Presentation transcript:

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2 4,597, what does this number really mean? The 5 in the hundreds place means 5 x 100 4, The 5 in the tens place means 5 x So, remember when you want to know the value of a number, check out its place value and multiply it by the number!

3 Rule: Any number from 50 rounds up to the next hundred Any number from 49 rounds down to that hundred

4 To round 4,597 to the nearest hundred because 97 is 50 or greater I round up to ,597 rounded to the nearest 100 is 4,600

5 To round 4,547 to the nearest hundred because 47 is 49 or less I round down to ,547 rounded to the nearest 100 is 4,500

6 To estimate the answer to a three digit multiplication problem First round to the nearest hundred then multiply the first two digits and finally add your zeros

7 First round 235 to the nearest hundred: Because 35 is 49 or less, round to 200, then multiply 2 x 7 = 14, add the two zeros and the answer is 1, x 7 = ~1,400

8 First round 151 to the nearest hundred: Because 51 is 50 or more, round to 200, then multiply 2 x 8 = 16, add the two zeros and the answer is 1, x 8 = ~1,600


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