What this lesson shows
2.054 as two and fifty-four thousandths, and as 2 + 0.05 + 0.004.
The worked example
The lesson works this one step by step: 2.054 in words. Then your kid tries one like it on paper.
The steps
- Put it in a chart
- Words: "and" for the point
- A sum of place values
Helping at home
To read a decimal, say the whole number, say "and" for the point, then read the digits after it and name the last place. As a sum, write what each digit is worth; a 0 drops out of the sum but holds its place in the digits.
If your kid gets stuck
Which place does the last digit sit in?
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 5.NBT.A.3a
Read and write decimals to thousandths using base-ten numerals, number names, and expanded form, e.g., 347.392 = 3 × 100 + 4 × 10 + 7 × 1 + 3 × (1/10) + 9 × (1/100) + 2 × (1/1000).
Matches standards in 49 statesSee each state's code
- Alabama MA19.5.4a
- Alaska 5.NBT.3.a
- Arizona 5.NBT.A.3.a
- Arkansas 5.NPV.3
- California 5.NBT.A.3
- Colorado 5.NBT.A.3.a
- Connecticut 5.NBT.A.3
- Delaware 5.NBT.A.3
- District of Columbia 5.NBT.A.3
- Florida MA.5.NSO.1.2
- Georgia 5.NR.4.1
- Hawaii 5.NBT.A.3
- Idaho 5.NBT.A.3.a
- Illinois 5.NBT.A.3
- Iowa 5.NBT.A.3.a
- Kansas 5.NBT.3.a
- Kentucky KY.5.NBT.3.a
- Louisiana 5.NBT.A.3.a
- Maine 5.NBT.A.3a
- Maryland 5.NOS.A.3.a
- Massachusetts 5.NBT.A.3.a
- Michigan 5.NBT.A.3
- Minnesota 4.1.2.4, 5.1.2.1
- Mississippi 5.NBT.3.a
- Missouri 5.NBT.A.1, 4.NF.C.11
- Montana MT.5.NBT.3.a, 5.D2.7
- Nebraska 5.N.1.a
- Nevada 5.NBT.A.3
- New Hampshire 5.NBT.A.3
- New Jersey 5.NBT.A.3a
- New Mexico 5.NBT.A.3
- New York NY-5.NBT.3.a
- North Carolina NC.5.NBT.3.a
- North Dakota 5.NO.CC.1
- Ohio 5.NBT.3.a
- Oklahoma 4.N.3.7, 5.N.1.2
- Oregon 5.NBT.A.3
- Pennsylvania CC.2.1.5.B.1
- Rhode Island 5.NBT.A.3.a
- South Carolina 5.NR.1.1
- South Dakota 5.NBT.A.3.a
- Tennessee 5.NBT.A.3
- Texas 111.7.b.2.A
- Utah 5.NBT.3.a
- Vermont 5.NBT.A.3
- Virginia 4.NS.4b, 4.NS.4c, 4.NS.4d
- Washington 5.NBT.A.3
- West Virginia M.5.6
- Wisconsin M.5.NBT.A.3