What this lesson shows
Compare and combine grams, milliliters, or feet, with the unit in the answer.
The worked example
The lesson works this one step by step: 450 grams and 275 grams, how much more. Then your kid tries one like it on paper.
The steps
- A bar for each amount
- Compare: subtract
- Combine: add
- Keep the unit
Helping at home
Draw a bar for each amount. "How much more" or "heavier" compares, so subtract; "together" or "in all" combines, so add. Write the unit after the answer.
If your kid gets stuck
Compare or combine? Then write the unit.
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 3.MD.A.2
Measure and estimate liquid volumes and masses of objects using standard units of grams (g), kilograms (kg), and liters (l). Add, subtract, multiply, or divide to solve one-step word problems involving masses or volumes that are given in the same units, e.g., by using drawings (such as a beaker with a measurement scale) to represent the problem.
Matches standards in 50 statesSee each state's code
- Alabama MA19.3.19a
- Alaska 3.MD.2, 3.MD.3
- Arizona 3.MD.A.2
- Arkansas 3.GM.8, 3.GM.9
- California 3.MD.A.2
- Colorado 3.MD.A.2
- Connecticut 3.MD.A.2
- Delaware 3.MD.A.2
- District of Columbia 3.MD.A.2
- Florida MA.3.M.1.1, MA.3.M.1.2
- Georgia 3.MDR.5.5
- Hawaii 3.MD.A.2
- Idaho 3.MD.A.2
- Illinois 3.MD.A.2
- Indiana 3.M.1, 2.M.3, 3.M.2
- Iowa 3.MD.A.2
- Kansas 3.MD.2, 3.MD.3
- Kentucky KY.3.MD.2.a, KY.3.MD.2.b
- Louisiana 3.MD.A.2
- Maine 3.MD.A.2
- Maryland 3.GR.A.3, 3.GR.A.4
- Massachusetts 3.MD.A.2
- Michigan 3.MD.A.2
- Minnesota 3.3.3.4
- Mississippi 3.MD.2
- Missouri 3.GM.B.7, 3.GM.B.8
- Montana MT.3.MD.2
- Nebraska 3.G.3.a, 3.G.3.b
- Nevada 3.MD.A.2
- New Hampshire 3.MD.A.2
- New Jersey 3.M.A.2
- New Mexico 3.MD.A.2
- New York NY-3.MD.2.a, NY-3.MD.2.b
- North Carolina NC.3.MD.2.b, NC.3.MD.2.c, NC.4.MD.1.b
- North Dakota 3.GM.M.2
- Ohio 3.MD.2
- Oklahoma 2.GM.2.3, 3.GM.2.7
- Oregon 3.GM.B.4
- Pennsylvania CC.2.4.3.A.1
- Rhode Island 3.MD.A.2
- South Carolina 4.MGSR.2.4, 3.MGSR.2.5
- South Dakota 3.MD.A.2
- Tennessee 3.MD.A.2
- Texas 111.5.b.7.D, 111.5.b.7.E
- Utah 3.MD.2
- Vermont 3.MD.A.2
- Virginia 2.MG.1a.ii, 2.MG.1a.iii, 2.MG.1b.ii, 2.MG.1b.iii, 3.MG.1a, 3.MG.1b.ii, 3.MG.1b.iii, 3.MG.1c, 5.MG.1b.i, 5.MG.1b.ii, 5.MG.1b.iii
- Washington 3.MD.A.2
- West Virginia M.3.19
- Wisconsin M.3.MD.A.2