Ten more past a hundred: 2nd grade math lesson

What this lesson shows

Fixes a mistake

10 more than 192 is 202. 9 tens and 1 more ten make a new hundred.

The worked example

The lesson works this one step by step: 192. Then your kid tries one like it on paper.

The steps

9 tens and 1 more ten
10 tens is a hundred
The tens become 0

Helping at home

With 9 tens, 1 more ten makes 10 tens: a new hundred. Add 1 to the hundreds, and write 0 in the tens.

If your kid gets stuck

10 tens make a 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.

See how Lux works

Standards

Common Core 2.NBT.B.8
Mentally add 10 or 100 to a given number 100-900, and mentally subtract 10 or 100 from a given number 100-900.

Matches standards in 48 statesSee each state's code

Alabama MA19.2.13
Alaska 2.NBT.8
Arizona 2.NBT.B.8
Arkansas 2.NPV.4
California 2.NBT.B.8
Colorado 2.NBT.B.8
Connecticut 2.NBT.B.8
Delaware 2.NBT.B.8
District of Columbia 2.NBT.B.8
Florida MA.2.NSO.2.2
Georgia 2.NR.2.2
Hawaii 2.NBT.B.8
Idaho 2.NBT.B.8
Illinois 2.NBT.B.8
Iowa 2.NBT.B.8
Kansas 2.NBT.8
Kentucky KY.2.NBT.8
Louisiana 2.NBT.B.8
Maine 2.NBT.B.8
Maryland 2.NOS.C.10
Massachusetts 2.NBT.B.8
Michigan 2.NBT.B.8
Minnesota 2.1.1.3, 3.1.1.3
Mississippi 2.NBT.8
Missouri 2.NBT.B.10
Montana MT.2.NBT.8
Nebraska 2.N.4.c
Nevada 2.NBT.B.8
New Hampshire 2.NBT.B.8
New Jersey 2.NBT.B.8
New Mexico 2.NBT.B.8
New York NY-2.NBT.8
North Carolina NC.2.NBT.8
North Dakota 2.NO.NBT.5
Ohio 2.NBT.2, 2.NBT.8
Oklahoma 2.N.1.4, 3.N.1.3
Oregon 2.NBT.B.8
Rhode Island 2.NBT.B.8
South Carolina 2.NR.1.4
South Dakota 2.NBT.B.8
Tennessee 2.NBT.C.8
Texas 111.4.b.7.B
Utah 2.NBT.8
Vermont 2.NBT.B.8
Virginia 2.NS.1e, 2.NS.1f
Washington 2.NBT.B.8
West Virginia M.2.13
Wisconsin M.2.NBT.B.8

Ten more past a hundred