What this lesson shows
150 tens ÷ 3 is 50 tens, so 1,500 ÷ 3 is about 500.
The worked example
The lesson works this one step by step: 1,538 ÷ 3. Then your kid tries one like it on paper.
The steps
- Find a friendly number
- Think in hundreds
- Check the exact answer
Helping at home
Look for a nearby number the divisor goes into easily, using a fact in hundreds. Divide that, then check the exact answer is close.
If your kid gets stuck
Find a friendly number first.
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 4.NBT.B.6
Find whole-number quotients and remainders with up to four-digit dividends and one-digit divisors, using strategies based on place value, the properties of operations, and/or the relationship between multiplication and division. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models.
Matches a standard in all 50 states and DCSee each state's code
- Alabama MA19.4.12a
- Alaska 4.NBT.6
- Arizona 4.NBT.B.6
- Arkansas 4.CAR.4
- California 4.NBT.B.6
- Colorado 4.NBT.B.6
- Connecticut 4.NBT.B.6
- Delaware 4.NBT.B.6
- District of Columbia 4.NBT.B.6
- Florida MA.4.NSO.2.4, MA.4.NSO.2.5
- Georgia 4.NR.2.4
- Hawaii 4.NBT.B.6
- Idaho 4.NBT.B.6.a, 4.NBT.B.6.b
- Illinois 4.NBT.B.6
- Indiana 4.CA.2
- Iowa 4.NBT.B.6
- Kansas 4.NBT.6
- Kentucky KY.4.NBT.6
- Louisiana 4.NBT.B.6
- Maine 4.NBT.B.6
- Maryland 4.NOS.B.5.a, 4.NOS.B.6.a, 4.NOS.B.6.b, 4.NOS.B.6.c, 4.NOS.B.6.d, 5.NOS.B.4.a, 5.NOS.B.5.a
- Massachusetts 4.NBT.B.6
- Michigan 4.NBT.B.6
- Minnesota 4.1.1.4, 4.1.1.6, 5.1.1.3
- Mississippi 4.NBT.6
- Missouri 4.NBT.A.7
- Montana MT.4.NBT.6, 4.D1.8, 4.D1.21
- Nebraska 4.A.1.c, 4.A.1.d
- Nevada 4.NBT.B.6
- New Hampshire 4.NBT.B.6
- New Jersey 4.NBT.B.6
- New Mexico 4.NBT.B.6
- New York NY-4.NBT.6
- North Carolina NC.4.NBT.6
- North Dakota 4.NO.NBT.6
- Ohio 4.NBT.6
- Oklahoma 4.N.2.3, 4.N.2.5, 5.N.2.1
- Oregon 4.NBT.B.6
- Pennsylvania CC.2.1.4.B.2
- Rhode Island 4.NBT.B.6
- South Carolina 4.PAFR.1.4, 4.NR.1.2
- South Dakota 4.NBT.B.6
- Tennessee 4.NBT.B.6
- Texas 111.6.b.4.B, 111.6.b.4.E, 111.6.b.4.F, 111.6.b.4.G
- Utah 4.NBT.6
- Vermont 4.NBT.B.6
- Virginia 4.CE.2a, 4.CE.2i, 5.CE.1a
- Washington 4.NBT.B.6
- West Virginia M.4.11
- Wisconsin M.4.NBT.A.3, M.4.NBT.B.6
- Wyoming 4.NBT.6