Rounding Numbers and Decimals

​Rounding
Let's go over the rules for rounding.

​Example problem:

Round to the nearest hundred.

3,252 = ___

Multiple Choice

Round 29,342 to the nearest hundred.

• 29,400

• 30,000

• 29,300

Multiple Choice

Round 86,652 to the nearest hundred.

• 86,660

• 86,700

• 87,000

Multiple Choice

Round 5,214 to the nearest ten.

• 5,200

• 5,000

• 5,210

​Multiplying Decimals by the powers of 10.

​When multiplying by the powers of then follow these steps.

- Count the number of zero's in your power of ten.
- Move the decimal to the right depending on the number of zero's in your power of ten.
- If needed, add zero place holders.
- Decide if your number needs a decimal point.

Multiple Choice

What is 95.66 x 100

• 9,566

• 956.6

• 9.566

Multiple Choice

What is 79.56 x 100

• 7,956

• 795.6

• 79.56789

Multiple Choice

What is 62.91 x 1000

• 629.1

• 62,910

• 6,291

Multiple Choice

What is 12.97 x 100

• 1,297

• 129.7

• 12.97

​Ordering Decimals

​When ordering decimals from least to greatest or greatest to least, follow these steps.

Multiple Choice

When comparing/ordering decimals you must first line them up vertically ( top to bottom) by the decimal point.

• True

• False

Multiple Choice

When comparing/ordering numbers you must add zero's until ALL the numbers have the same number of decimal places

• True

• False

Multiple Choice

Which is greater?

1.21 __ .121

• 1.21

• .121

Multiple Choice

Which is greater

5.36 __ .536

• 5.36

• .536

Multiple Choice

Which is greater

7.82 ___ 7.98

• 7.98

• 7.82

Multiple Choice

What is the value of the digit 6 in 26,172?

• 6,000

• 600

• 60,000

Multiple Choice

What is the value of the digit 2 in 2,491?

• 20,000

• 20

• 200

• 2,000