What this lesson shows
$37.81, two $10 checks, and 30 half dollars: enough for a $72.29 toy? Estimate, then each step.
The worked example
The lesson works this one step by step: $37.81, 2 checks of $10, 30 coins of 50¢, for $72.29. Then your kid tries one like it on paper.
The steps
- Estimate
- One step at a time
- Compare with the price
Helping at home
Estimate first, then write one step at a time: what the checks are worth, what the coins are worth, the total, and how it compares with the price.
If your kid gets stuck
Write each step on its own line.
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.B.7
Add, subtract, multiply, and divide decimals to hundredths, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used.
Matches a standard in all 50 states and DCSee each state's code
- Alabama MA19.5.8a, MA19.5.8b
- Alaska 5.NBT.7
- Arizona 5.NBT.B.7 *
- Arkansas 5.CAR.3, 5.CAR.4
- California 5.NBT.B.7
- Colorado 5.NBT.B.7
- Connecticut 5.NBT.B.7
- Delaware 5.NBT.B.7
- District of Columbia 5.NBT.B.7
- Florida MA.5.NSO.2.3, MA.5.NSO.2.4, MA.5.M.2.1
- Georgia 5.NR.4.4
- Hawaii 5.NBT.B.7
- Idaho 5.NBT.A.7.a, 5.NBT.A.7.b
- Illinois 5.NBT.B.7
- Indiana 5.CA.9, 5.CA.10
- Iowa 5.NBT.B.7
- Kansas 5.NBT.7
- Kentucky KY.5.NBT.7.a, KY.5.NBT.7.b
- Louisiana 5.NBT.B.7
- Maine 5.NBT.B.7
- Maryland 5.NOS.B.4.a, 5.NOS.B.5.a, 5.NOS.B.6.b, 5.NOS.B.6.c, 5.NOS.B.6.d, 5.NOS.B.7.a, 5.NOS.B.7.b, 5.NOS.B.7.c, 5.NOS.B.7.d, 5.NOS.B.7.e
- Massachusetts 5.NBT.B.7
- Michigan 5.NBT.B.7
- Minnesota 5.1.1.3, 5.1.3.1, 5.1.3.2, 5.1.3.4
- Mississippi 5.NBT.7
- Missouri 5.NBT.A.6, 5.NBT.A.7, 5.NBT.A.8, 5.NF.B.4, 5.RA.C.5
- Montana MT.5.NBT.7, 5.D1.11, 5.D1.12, 5.D1.13, 5.D2.11, 5.D2.12
- Nebraska 5.N.3.g, 5.A.1.c
- Nevada 5.NBT.B.7
- New Hampshire 5.NBT.B.7
- New Jersey 5.NBT.B.7
- New Mexico 5.NBT.B.7
- New York NY-5.NBT.7
- North Carolina NC.5.NBT.7.a, NC.5.NBT.7.b, NC.5.NBT.7.c, NC.5.NBT.7.d
- North Dakota 5.NO.NBT.5
- Ohio 5.NBT.7.a, 5.NBT.7.b, 5.NBT.7.c
- Oklahoma 5.N.2.1, 5.N.3.2, 5.N.3.3
- Oregon 5.NBT.B.7
- Pennsylvania CC.2.1.5.B.2
- Rhode Island 5.NBT.B.7
- South Carolina 5.PAFR.1.4, 5.PAFR.1.3
- South Dakota 5.NBT.B.7.a, 5.NBT.B.7.b
- Tennessee 5.NBT.B.7
- Texas 111.6.b.4.A, 111.7.b.3.A, 111.7.b.3.D, 111.7.b.3.E, 111.7.b.3.F, 111.7.b.3.G, 111.7.b.3.K
- Utah 5.NBT.7
- Vermont 5.NBT.B.7
- Virginia 4.CE.4a.i, 4.CE.4a.ii, 4.CE.4b, 5.CE.3a, 5.CE.3b.i, 5.CE.3b.ii, 5.CE.3b.iii, 5.CE.3c.i, 5.CE.3c.ii, 5.CE.3c.iii, 5.CE.3c.iv, 5.CE.3d, 5.CE.3e
- Washington 5.NBT.B.7
- West Virginia M.5.10
- Wisconsin M.5.NBT.A.4, M.5.NBT.B.7
- Wyoming 5.NBT.7