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Round to the nearest:
ⓐ
Locate the hundreds place in 103,978. |
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Underline the digit to the right of the hundreds place. |
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Since 7 is greater than or equal to 5, add 1 to the 9. Replace all digits to the right of the hundreds place with zeros. |
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So, 104,000 is 103,978 rounded to the nearest hundred. |
ⓑ
Locate the thousands place and underline the digit to the right of the thousands place. |
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Since 9 is greater than or equal to 5, add 1 to the 3. Replace all digits to the right of the hundreds place with zeros. |
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So, 104,000 is 103,978 rounded to the nearest thousand. |
ⓒ
Locate the ten thousands place and underline the digit to the right of the ten thousands place. |
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Since 3 is less than 5, we leave the 0 as is, and then replace the digits to the right with zeros. |
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So, 100,000 is 103,978 rounded to the nearest ten thousand. |
Round 206,981 to the nearest: ⓐ hundred ⓑ thousand ⓒ ten thousand.
ⓐ 207,000 ⓑ 207,000 ⓒ 210,000
Round 784,951 to the nearest: ⓐ hundred ⓑ thousand ⓒ ten thousand.
ⓐ 785,000 ⓑ 785,000 ⓒ 780,000
The numbers 2, 4, 6, 8, 10, and 12 are called multiples of 2. A multiple of 2 can be written as the product of a counting number and 2.
Similarly, a multiple of 3 would be the product of a counting number and 3.
We could find the multiples of any number by continuing this process.
[link] shows the multiples of 2 through 9 for the first 12 counting numbers.
Counting Number | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Multiples of 2 | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 |
Multiples of 3 | 3 | 6 | 9 | 12 | 15 | 18 | 21 | 24 | 27 | 30 | 33 | 36 |
Multiples of 4 | 4 | 8 | 12 | 16 | 20 | 24 | 28 | 32 | 36 | 40 | 44 | 48 |
Multiples of 5 | 5 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 55 | 60 |
Multiples of 6 | 6 | 12 | 18 | 24 | 30 | 36 | 42 | 48 | 54 | 60 | 66 | 72 |
Multiples of 7 | 7 | 14 | 21 | 28 | 35 | 42 | 49 | 56 | 63 | 70 | 77 | 84 |
Multiples of 8 | 8 | 16 | 24 | 32 | 40 | 48 | 56 | 64 | 72 | 80 | 88 | 96 |
Multiples of 9 | 9 | 18 | 27 | 36 | 45 | 54 | 63 | 72 | 81 | 90 | 99 | 108 |
Multiples of 10 | 10 | 20 | 30 | 40 | 50 | 60 | 0 | 80 | 90 | 100 | 110 | 120 |
A number is a multiple of n if it is the product of a counting number and n .
Another way to say that 15 is a multiple of 3 is to say that 15 is divisible by 3. That means that when we divide 3 into 15, we get a counting number. In fact, is 5, so 15 is
If a number m is a multiple of n , then m is divisible by n .
Look at the multiples of 5 in [link] . They all end in 5 or 0. Numbers with last digit of 5 or 0 are divisible by 5. Looking for other patterns in [link] that shows multiples of the numbers 2 through 9, we can discover the following divisibility tests:
A number is divisible by:
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