Rounding Multi-Digit Numbers to Any Place
Print 4th grade rounding worksheets: round to the nearest 1,000, 10,000 and 100,000 on number lines, round to every place, and estimate sums. 12 versions.
Worksheet version 1 of 12. The answer key matches the current version.
Mark each number on its line and round it. Then round each number in the table to every place, and use rounding to estimate before you work out the exact answer. A number exactly halfway rounds up.
A. Mark each number on its number line. Round it to the place shown.
a) Round 18,469 to the nearest 1,000: ________
b) Round 31,248 to the nearest 1,000: ________
c) Round 502,182 to the nearest 10,000: ________
d) Round 317,298 to the nearest 10,000: ________
e) Round 442,879 to the nearest 100,000: ________
f) Round 650,000 to the nearest 100,000: ________
B. Round each number to every place.
| Number | Nearest ten | Nearest hundred | Nearest thousand | Nearest ten thousand | Nearest hundred thousand |
|---|---|---|---|---|---|
| 635,093 | |||||
| 299,980 | |||||
| 962,297 |
C. Round each number to the nearest thousand (first story) or ten thousand (second story) to estimate. Then find the exact answer.
1) A stadium sold 49,203 tickets on Saturday and 18,255 on Sunday. About how many tickets were sold in all?
Estimate: _______ + _______ = _______
Exact: _______
How far is the estimate from the exact answer? _______
2) A game was downloaded 891,780 times. Its sequel was downloaded 308,687 times. About how many more times was the first game downloaded?
Estimate: _______ − _______ = _______
Exact: _______
How far is the estimate from the exact answer? _______
About this worksheet
Rounding a big number works the same way as rounding to the nearest 10: find the two round numbers it sits between and decide which one is closer. 46,300 sits between 46,000 and 47,000, before the halfway mark of 46,500, so it rounds to 46,000. The digit just to the right of the rounding place tells you which side of halfway the number is on.
Part A has six number lines, two each for the nearest thousand, ten thousand and hundred thousand, with the ends and the halfway mark labelled. One number in each version sits exactly on the halfway mark. Part B rounds three numbers to every place from tens to hundred thousands; one of them is just under a round number, so rounding carries through a run of 9s (like 399,960 to 400,000). Part C uses rounding to estimate a sum and a difference in a story, then compares the estimate with the exact answer. The answer key marks every number on its line and fills in the table and both estimates.
Practice aligned to CCSS 4.NBT.A.3.
Before this: rounding to the nearest 10 and 100 on number lines and place value to 1,000,000. Next: multi-digit addition and multi-digit subtraction, where an estimate checks each answer. More practice: addition and subtraction worksheets and 4th grade math worksheets.
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