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Quizzes > High School Quizzes > Mathematics

Rounding Decimals Worksheet: Practice Quiz

Sharpen skills with worksheets and rounding quizzes

Difficulty: Moderate
Grade: Grade 4
Study OutcomesCheat Sheet
Paper art depicting a trivia quiz on decimal rounding for middle school students.

Easy
What is 2.34 rounded to the nearest whole number?
2
3
2.3
1
Since the first digit after the decimal is 3, which is less than 5, we round down, keeping the whole number 2. Thus, the correct answer is 2.
What is 5.67 rounded to the nearest whole number?
5
6
5.7
5.6
The digit immediately after the decimal in 5.67 is 6 which is 5 or more, so the number rounds up to 6. Therefore, the correct answer is 6.
What is 4.82 rounded to one decimal place?
4.8
4.82
4.9
4.7
Rounding to one decimal place means keeping the tenths digit unchanged when the hundredths digit is less than 5. Since the hundredths digit in 4.82 is 2, the correct answer is 4.8.
What is 3.15 rounded to one decimal place?
3.1
3.2
3.15
3.0
Here, the hundredths digit is 5 which calls for rounding up the tenths digit. Therefore, 3.15 rounded to one decimal place becomes 3.2.
What is 6.04 rounded to the nearest whole number?
6
7
6.1
6.04
Since the digit after the decimal in 6.04 is 0, which is less than 5, no rounding up is required. Thus, the number remains 6 when rounded to the nearest whole number.
Medium
What is 7.256 rounded to the nearest tenth?
7.2
7.3
7.26
7.25
When rounding to the nearest tenth, the hundredths digit (5) indicates that the tenths digit should be increased by one. Therefore, 7.256 rounds to 7.3.
What is 9.999 rounded to the nearest tenth?
10.0
9.9
9.99
9.0
The hundredths digit is 9, which is 5 or more, so the tenths digit is rounded up. Accordingly, 9.999 rounded to the nearest tenth becomes 10.0.
What is 12.3456 rounded to the nearest hundredth?
12.35
12.34
12.36
12.45
When rounding to the nearest hundredth, the thousandths digit (5) causes the hundredths digit to increase by one. Thus, 12.3456 rounds to 12.35.
What is 0.444 rounded to the nearest tenth?
0.4
0.44
0.5
0.3
The hundredths digit in 0.444 is 4, which is less than 5. Consequently, when rounding to the nearest tenth, the number remains 0.4.
What is 8.65 rounded to the nearest whole number?
9
8
8.6
10
Since 8.65 has a tenths digit of 6 (which is 5 or more), it rounds up to 9 when rounding to the nearest whole number. Hence, the correct answer is 9.
What is 15.275 rounded to the nearest tenth?
15.3
15.2
15.28
15.4
When rounding to the nearest tenth, the hundredths digit 7 (which is 5 or more) causes the tenths digit to increase by one, changing 15.2 to 15.3.
What is 0.995 rounded to the nearest whole number?
1
0
0.99
1.0
Even though 0.995 is very close to 1, when rounding to the nearest whole number the decimal part rounds up, resulting in 1 as the correct answer.
What is 3.141 rounded to the nearest tenth?
3.1
3.14
3.0
3.2
Because the hundredths digit is 4, which is less than 5, the tenths digit remains unchanged. Therefore, 3.141 rounds to 3.1.
What is 27.318 rounded to the nearest whole number?
27
28
27.3
26
Since the digit immediately after the decimal (3) is less than 5, 27.318 remains 27 when rounded to the nearest whole number.
What is 6.378 rounded to the nearest hundredth?
6.38
6.37
6.40
6.3
Rounding to the nearest hundredth involves checking the thousandths digit. Since the thousandths digit is 8 (5 or more), the hundredths place increases by one, yielding 6.38.
Hard
What is 89.9952 rounded to the nearest tenth?
90.0
89.9
89.99
90.1
To round to the nearest tenth, we examine the hundredths digit, which is 9. This causes the tenths digit to round up from 9, and with the carry the number becomes 90.0. This demonstrates how carrying works during rounding.
What is 0.0056 rounded to the nearest hundredth?
0.01
0.00
0.005
0.1
When rounding 0.0056 to the nearest hundredth, the thousandths digit (5) causes the hundredths digit to increase from 0 to 1, resulting in 0.01. Thus, the correct answer is 0.01.
What is 37.657 rounded to the nearest hundredth?
37.66
37.65
37.67
37.70
To round to the nearest hundredth, the thousandths digit is examined. Here, since the thousandths digit is 7 (which is 5 or more), the hundredths digit is increased from 5 to 6, giving 37.66.
What is 0.9999 rounded to the nearest tenth?
1.0
0.9
0.99
1
Rounding 0.9999 to the nearest tenth requires checking the hundredths digit, which is 9. This rounds the tenths digit up, making 0.9 become 1.0, so the correct answer is 1.0.
What is 123.499 rounded to the nearest whole number?
123
124
123.5
122
When rounding to the nearest whole number, the first digit after the decimal in 123.499 is 4, which is less than 5. As a result, no rounding up occurs and the number remains 123.
0
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Study Outcomes

  1. Understand the rules for rounding decimals to various place values.
  2. Apply accurate rounding techniques to solve decimal problems effectively.
  3. Analyze decimal numbers to identify the appropriate rounding strategy.
  4. Evaluate and verify rounded results to ensure accuracy.
  5. Develop confidence in using rounding skills for test preparation and exams.

Rounding Decimals Quiz & Worksheets Cheat Sheet

  1. Understand the place value system - Every decimal digit lives in its own "neighborhood," like tenths, hundredths, or thousandths, and knowing where each digit sits is key to rounding correctly. Think of it as each place having its own dance floor - only the closest partner decides if you move up or stay put. Symbolab Guide on Rounding Decimals
  2. Learn the rounding rule - The magic number is 5: if the digit right next to your rounding place is 5 or more, you round up; if it's 4 or less, you round down. This "five-and-above, four-and-below" rhyme is your trusty sidekick for instant decisions. Online Math Learning: Rounding Decimals
  3. Practice rounding to the nearest whole number - Turn 3.6 into 4 and 3.4 into 3 by checking the digit right after the decimal point. Soon you'll breeze through everyday examples like total scores or hours. eMathHelp: Rounding to Whole Numbers
  4. Master rounding to the nearest tenth - Focus on the second decimal place and decide whether the first decimal digit nudges you up or keeps you steady. For instance, 2.78 becomes 2.8, while 2.74 stays at 2.7 - easy peasy! Symbolab: Tenths Rounding Tips
  5. Get comfortable with rounding to the nearest hundredth - Now the spotlight's on the third decimal digit. When rounding 5.678, you look at the 8 (so it's 5.68); with 5.672, you glance at the 2 (so it's 5.67). Practice makes perfect! eMathHelp: Hundredths Rounding Guide
  6. Use number lines to visualize rounding - Plotting decimals on a number line helps you "see" which waypoint - up or down - is closer. This trick turns abstract numbers into a fun path-finding adventure. Symbolab: Rounding with Number Lines
  7. Apply rounding in real-life scenarios - Whether you're dealing with dollars and cents or measuring ingredients, rounding brings real-world problems into sharper focus. Try estimating snack costs or recipe tweaks for tasty practice. Symbolab: Real-Life Rounding Examples
  8. Check your work - After you round, pause and ask: "Does this answer make sense?" A quick sanity check prevents silly mistakes and boosts your confidence. Online Math Learning: Verify Your Rounds
  9. Practice with worksheets - Regular drills with rounding exercises help solidify your skills and turn you into a rounding rockstar. Challenge yourself with mixed problems and time trials. Online Math Learning: Rounding Worksheets
  10. Remember the rhyme - "Find the place and look next door; 5 or higher, add one more; 4 or less, just ignore." This catchy tune sticks in your head and keeps you on track every time. Online Math Learning: Rounding Rhyme
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