What this lesson shows
Fixes a mistake
923 to the nearest ten is 920, not 900.
The worked example
The lesson works this one step by step: 923 to the nearest ten. Then your kid tries one like it on paper.
The steps
- Read the place
- Between which two tens?
- Mark the middle
- Pick the closer one
Helping at home
Read the place first: the nearest ten, or the nearest hundred. Name the number in that place, 92 tens and 3 ones, and write the two round numbers it sits between. It can only round to one of those two.
If your kid gets stuck
Read the place first: ten or hundred?
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