Roller Coaster Rounding Worksheet
Grade 3 Math • Place Value
Roller Coaster Rounding
Name:
Date:
The Coaster Rule: Find your place value. Look at the neighbor to the right:
0, 1, 2, 3, 4: Round Down 5, 6, 7, 8, 9: Round Up
1
Plot & Round to the Nearest 10
Mark a point on the line, then circle the nearest ten.
A. Round 47 to nearest 10 Benchmark: 40 or 50
40
45
50
47 is closer to:
B. Round 132 to nearest 10 Benchmark: 130 or 140
130
135
140
132 is closer to:
2
Fast Track to Ten (Practice Table)
| Number | Tens It Falls Between | Ones Digit (Look Right) | Rounded to Nearest 10 |
|---|
| 73 | 70 and 80 | 3 (round down) | |
| | | |
| 28 | | | |
|
|
|
| 85 |
|
|
|
| 264 |
|
|
|
| 515 |
|
|
|
3
Climbing to the Nearest 100
Locate the number on the hundreds line and write your answer.
A. Round 340 to nearest 100 Benchmark: 300 or 400
300
350
400
340 rounded to nearest 100:
B. Round 685 to nearest 100 Benchmark: 600 or 700
600
650
700
685 rounded to nearest 100:
Roller Coaster Rounding • Practice Sheet Page 1 of 2
Roller Coaster Rounding: Challenge Track
Part 2: Nearest 100, Word Problems & Error Analysis
Name:
4
Century Express: Round to the Nearest 100
Look at the tens digit!
248 Tens digit: 4
Rounds to:
582 Tens digit: 8
Rounds to:
750 Tens digit: 5
Rounds to:
119 Tens digit: 1
Rounds to:
863 Tens digit: 6
Rounds to:
949 Tens digit: 4
Rounds to:
5
Theme Park Story Problems
A
The Cyclone Mountain roller coaster carried 468 riders on Saturday morning. The ride supervisor needs two quick estimates for the park director:
Round 468 to the nearest 10:
Estimate:
Round 468 to the nearest 100:
Estimate:
B
Jordan counted 75 souvenir tokens in his prize pouch. If he rounds his token count to the nearest 10, what number will he report? Explain why in one clear sentence.
Nearest 10:
Reason (Why does it round up or down?):
6
Track Inspector: Spot the Blunder!
Mechanic Marcus says: Mistake!
"345 rounded to the nearest 10 is 340 because 5 is right in the middle, so you leave the tens alone."
Correct rounded answer:
What was Marcus's mistake?
Operator Olivia says: Mistake!
"629 rounded to the nearest 100 is 700 because the ones digit is 9, and 9 means round up!"
Correct rounded answer:
What was Olivia's mistake?
Riddle Round-Up: Unlock the Secret Ride
Round each number as directed:
88 to nearest 10:
450 to nearest 100:
703 to nearest 10:
Roller Coaster Rounding • Practice Sheet Page 2 of 2
