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Chapter 1: Problem 6

Round to the nearest ten. $$ 54 $$

Short Answer

Expert verified
50

Step by step solution

01

Identify the Units Digit

Look at the number 54 and identify its units digit, which is 4.
02

Determine Rounding Rule

If the units digit is less than 5, round down. If the units digit is 5 or greater, round up. Since the units digit of 54 is 4, which is less than 5, we will round down.
03

Round the Number

To round down, change the units digit to 0 and the tens digit remains the same. Therefore, 54 rounded to the nearest ten is 50.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

rounding to nearest ten
Rounding to the nearest ten is a basic mathematical skill that helps simplify numbers. It makes numbers easier to work with in calculations or estimations.
To round a number to the nearest ten, you follow a series of simple steps:
First, identify the units digit in the number you want to round. This is the last digit on the right.
Then, use rounding rules to decide if you should round the number up or down.
In the exercise provided, the number 54 is rounded to the nearest ten. Let's see how it's done.
place value
Understanding place value is essential for rounding numbers. Place value refers to the position of a digit in a number and its corresponding value.
For example, in the number 54:
  • The digit 5 is in the tens place, which means it represents 50 (or five tens).
  • The digit 4 is in the units place, which means it represents 4 (or four ones).
When rounding to the nearest ten, focus on the units digit to decide whether to round the tens digit up or keep it the same.
rounding rules
Rounding rules are straightforward and act as guidelines to determine whether to round a number up or down.
  • If the units digit is 5 or greater, round up.
  • If the units digit is less than 5, round down.
In our exercise, we have the number 54. The units digit is 4, which is less than 5. According to our rounding rules, we round down.
Therefore, we change the units digit to 0 and maintain the tens digit. Thus, 54 rounded to the nearest ten becomes 50.

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