Where the carried digit goes: 4th grade math lesson

What this lesson shows

Fixes a mistake

The regrouped tens sit above the tens and get added after multiplying, not before.

The worked example

The lesson works this one step by step: 34 × 6. Then your kid tries one like it on paper.

The steps

The carry is tens
Multiply first
Then add the carry

Helping at home

After writing the ones, say what the carried digit is: tens. Multiply the tens first, then add the carried tens. Check with an estimate.

If your kid gets stuck

Multiply first, then add the carry.

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.B.5
Multiply a whole number of up to four digits by a one-digit whole number, and multiply two two-digit numbers, using strategies based on place value and the properties of operations. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models.
Common Core 5.NBT.B.5
Fluently multiply multi-digit whole numbers using the standard algorithm.

Matches a standard in all 50 states and DCSee each state's code

Alabama MA19.4.11a, MA19.5.6
Alaska 4.NBT.5, 5.NBT.5
Arizona 4.NBT.B.5 *, 5.NBT.B.5
Arkansas 4.CAR.3, 5.CAR.1
California 4.NBT.B.5, 5.NBT.B.5
Colorado 4.NBT.B.5, 5.NBT.B.5
Connecticut 4.NBT.B.5, 5.NBT.B.5
Delaware 4.NBT.B.5, 5.NBT.B.5
District of Columbia 4.NBT.B.5, 5.NBT.B.5
Florida MA.4.NSO.2.2, MA.4.NSO.2.3, MA.4.NSO.2.5, MA.5.NSO.2.1
Georgia 4.NR.2.3, 5.NR.2.1
Hawaii 4.NBT.B.5, 5.NBT.B.5
Idaho 4.NBT.B.5.a, 4.NBT.B.5.b, 5.NBT.B.5
Illinois 4.NBT.B.5, 5.NBT.B.5
Indiana 4.CA.1
Iowa 4.NBT.B.5, 5.NBT.B.5
Kansas 4.NBT.5, 5.NBT.5
Kentucky KY.4.NBT.5, KY.5.NBT.5
Louisiana 4.NBT.B.5, 5.NBT.B.5
Maine 4.NBT.B.5, 5.NBT.B.5
Maryland 4.NOS.B.4, 4.NOS.B.5.a, 4.NOS.B.5.b, 4.NOS.B.5.c, 4.NOS.B.5.d, 4.NOS.B.6.a, 5.NOS.B.4.a, 5.NOS.B.5.a, 5.NOS.B.4.b, 5.NOS.B.4.c, 5.NOS.B.4.d
Massachusetts 4.NBT.B.5, 5.NBT.B.5
Michigan 4.NBT.B.5, 5.NBT.B.5
Minnesota 3.1.2.5, 4.1.1.3, 4.1.1.4, 5.1.1.3
Mississippi 4.NBT.5, 5.NBT.5
Missouri 4.NBT.A.6, 5.NBT.A.7
Montana MT.4.NBT.5, 4.D1.21, 4.D2.4, 4.D2.9, MT.5.NBT.5, 5.D4.1
Nebraska 4.A.1.b, 4.A.1.d, 5.A.1.a
Nevada 4.NBT.B.5, 5.NBT.B.5
New Hampshire 4.NBT.B.5, 5.NBT.B.5
New Jersey 4.NBT.B.5, 5.NBT.B.5
New Mexico 4.NBT.B.5, 5.NBT.B.5
New York NY-4.NBT.5, NY-5.NBT.5
North Carolina NC.4.NBT.5, NC.5.NBT.5
North Dakota 4.NO.NBT.5, 5.NO.NBT.4
Ohio 4.NBT.5, 5.NBT.5
Oklahoma 3.N.2.8, 4.N.2.2, 4.N.2.3, 5.N.2.1
Oregon 4.NBT.B.5, 5.NBT.B.5
Pennsylvania CC.2.1.4.B.2, CC.2.1.5.B.2
Rhode Island 4.NBT.B.5, 5.NBT.B.5
South Carolina 4.NR.1.2, 5.PAFR.1.1, 4.PAFR.1.3
South Dakota 4.NBT.B.5, 5.NBT.B.5
Tennessee 4.NBT.B.5, 5.NBT.B.5
Texas 111.5.b.4.G, 111.6.b.4.B, 111.6.b.4.C, 111.6.b.4.D, 111.6.b.4.G, 111.7.b.3.B
Utah 4.NBT.5, 5.NBT.5
Vermont 4.NBT.B.5, 5.NBT.B.5
Virginia 4.CE.2a, 4.CE.2g.i, 4.CE.2g.ii, 4.CE.2g.iii, 5.CE.1a, 5.CE.1b.i, 5.CE.1b.ii, 5.CE.1b.iii, 5.CE.1b.iv
Washington 4.NBT.B.5, 5.NBT.B.5
West Virginia M.4.10, M.5.8
Wisconsin M.4.NBT.B.5, M.4.NBT.A.3, M.5.NBT.B.5
Wyoming 4.NBT.5a, 4.NBT.5b, 4.NBT.5c, 4.NBTP.5.A, 4.NBTP.5.B, 4.NBTP.5.C

Where the carried digit goes