Rounding that rolls over: 4th grade math lesson

What this lesson shows

Fixes a mistake

9,960 to the nearest hundred is 10,000: the 9 hundreds roll into a thousand.

The worked example

The lesson works this one step by step: 9,960 to the nearest hundred. Then your kid tries one like it on paper.

The steps

Find the two ends
Past the middle: round up
10 make 1 of the next place
Rounding up gives more

Helping at home

Name the two round numbers it sits between, in the unit you round to: 9,960 is between 99 hundreds and 100 hundreds. 100 hundreds is 10,000. Rounding up always gives a bigger number, so check the answer is bigger.

If your kid gets stuck

Name the two ends in hundreds, tens, or thousands.

Watch it with Lux

With Lux, this lesson is a narrated video and a printed page your kid works on. Then Lux helps with the same math on their own worksheet, one question at a time.

See how Lux works

Standards

Common Core 4.NBT.A.3
Use place value understanding to round multi-digit whole numbers to any place.

Matches standards in 48 statesSee each state's code

Alabama MA19.4.9
Alaska 4.NBT.3
Arizona 4.NBT.A.3
Arkansas 4.NPV.3
California 4.NBT.A.3
Colorado 4.NBT.A.3
Connecticut 4.NBT.A.3
Delaware 4.NBT.A.3
District of Columbia 4.NBT.A.3
Florida MA.4.NSO.1.4
Georgia 4.NR.1.4
Hawaii 4.NBT.A.3
Idaho 4.NBT.A.3
Illinois 4.NBT.A.3
Indiana 4.NS.7
Iowa 4.NBT.A.3
Kansas 4.NBT.3
Kentucky KY.4.NBT.3
Louisiana 4.NBT.A.3
Maine 4.NBT.A.3
Maryland 4.NOS.A.1.b, 4.NOS.B.3.a
Massachusetts 4.NBT.A.3
Michigan 4.NBT.A.3
Minnesota 3.1.1.4
Mississippi 4.NBT.3
Missouri 4.NBT.A.1, 5.NBT.A.5
Montana MT.4.NBT.3, 4.D1.3
Nevada 4.NBT.A.3
New Hampshire 4.NBT.A.3
New Jersey 4.NBT.A.3
New Mexico 4.NBT.A.3
New York NY-4.NBT.3
North Dakota 4.NO.NBT.3
Ohio 4.NBT.3, 5.NBT.4
Oklahoma 3.N.1.5
Oregon 4.NBT.A.3
Pennsylvania CC.2.1.4.B.1
Rhode Island 4.NBT.A.3
South Dakota 4.NBT.A.3
Tennessee 4.NBT.A.3
Texas 111.5.b.2.C, 111.6.b.2.D, 111.6.b.4.G
Utah 4.NBT.3
Vermont 4.NBT.A.3
Virginia 4.CE.1b
Washington 4.NBT.A.3
West Virginia M.4.8, M.5.7
Wisconsin M.4.NBT.A.3
Wyoming 4.NBT.3

Rounding that rolls over