Rounding worksheets for 3rd and 4th grade. The chart explains rounding with a number line and with the digit rule. The worksheets round to the nearest ten and hundred on number lines first, then without them, then thousands, and finish with numbers up to six digits rounded to any place.
Rounding shown on a number line, the halfway rule, the five steps for rounding without a line, and a rhyme.
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Five numbers marked on a number line between two tens. Write the ten each is closer to.
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Sixteen two- and three-digit numbers to round to the nearest ten. Includes answer key.
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Five numbers marked on a number line between two hundreds. Write the hundred each is closer to.
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Sixteen three- and four-digit numbers to round to the nearest hundred. Includes answer key.
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Ten numbers, each rounded two ways, to show that the two answers are often different.
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Sixteen four- and five-digit numbers to round to the nearest thousand. Includes answer key.
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Twelve numbers up to six digits to round to a named place, from hundreds to hundred thousands, then five numbers rounded three ways. Includes answer key.
Download PDFRounding replaces a number with a nearby number that is easier to work with. 47 becomes 50, and 362 becomes 400. It is used for estimating: checking whether an answer is about right, or adding up prices in your head.
Children often learn rounding as a rule about the digit 5 and forget why it works. These sheets start with the reason. On a number line, 47 sits between 40 and 50 and is plainly closer to 50. The two number line worksheets practice that for tens and for hundreds before any rule is used.
The rule comes next: find the place you are rounding to, look at the digit to its right, and round up if that digit is 5 or more. The How It Works chart sets this out in five steps. It also covers the one case the number line cannot settle, a number exactly halfway, which always rounds up.
Round to Tens and Hundreds rounds the same number two ways, because 347 is 350 to the nearest ten and 300 to the nearest hundred, and mixing those up is the most common mistake. The last sheet moves to thousands. Rounding depends on place value, so the place value worksheets come first, and printable number lines are useful for extra practice.
Round Large Numbers is the 4th grade sheet: numbers up to six digits, rounded to whichever place is named, from tens to hundred thousands. Two of them, 39,962 and 995,412, round up through a 9, so the next place changes too.
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