What this lesson shows
428 between 400 and 500, 450 in the middle, and the closer end. Grade 4's video.
The worked example
The lesson works this one step by step: 428 to the nearest hundred. Then your kid tries one like it on paper.
The steps
- Between which two?
- Mark the middle
- Put the number on the line
- Pick the closer end
Helping at home
Name the number in the place you round to: 428 is 4 hundreds and 28 ones, so it sits between 400 and 500. Draw a number line from one to the other, mark the middle, and put the number on it. It rounds to the closer end.
If your kid gets stuck
Which two round numbers is it between?
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.
Standards
- Common Core 3.NBT.A.1
Use place value understanding to round whole numbers to the nearest 10 or 100.
Matches standards in 48 statesSee each state's code
- Alabama MA19.3.10
- Alaska 3.NBT.1
- Arizona 3.NBT.A.1
- Arkansas 3.NPV.1
- California 3.NBT.A.1
- Colorado 3.NBT.A.1
- Connecticut 3.NBT.A.1
- Delaware 3.NBT.A.1
- District of Columbia 3.NBT.A.1
- Florida MA.3.NSO.1.4
- Georgia 3.NR.1.3
- Hawaii 3.NBT.A.1
- Idaho 3.NBT.A.1
- Illinois 3.NBT.A.1
- Indiana 3.NS.6
- Iowa 3.NBT.A.1
- Kansas 3.NBT.1
- Kentucky KY.3.NBT.1
- Louisiana 3.NBT.A.1
- Maine 3.NBT.A.1
- Maryland 3.NOS.A.1.c, 3.NOS.D.6
- Massachusetts 3.NBT.A.1
- Michigan 3.NBT.A.1
- Minnesota 2.1.1.4
- Mississippi 3.NBT.1
- Missouri 3.NBT.A.1
- Montana MT.3.NBT.1
- Nevada 3.NBT.A.1
- New Hampshire 3.NBT.A.1
- New Jersey 3.NBT.A.1
- New Mexico 3.NBT.A.1
- New York NY-3.NBT.1
- North Dakota 3.NO.NBT.2
- Ohio 3.NBT.1
- Oklahoma 2.N.1.6, 3.N.2.4
- Oregon 3.NBT.A.1
- Pennsylvania CC.2.1.3.B.1
- Rhode Island 3.NBT.A.1
- South Carolina 3.NR.1.4
- South Dakota 3.NBT.A.1
- Tennessee 3.NBT.A.1
- Texas 111.5.b.2.C, 111.5.b.4.B
- Utah 3.NBT.1
- Vermont 3.NBT.A.1
- Virginia 3.CE.1b
- Washington 3.NBT.A.1
- West Virginia M.3.12
- Wisconsin M.3.NBT.A.1