What this lesson shows
Jeff's rope is 48 inches. Larry's is 9 inches shorter, 39. Together they have 87 inches.
The worked example
The lesson works this one step by step: 48 inches and 9 inches shorter. Then your kid tries one like it on paper.
The steps
- Draw a bar for each
- Find the shorter length
- Add both together
Helping at home
Draw a bar for each length. Find the shorter one first: take away how much shorter. Then add both lengths for the total.
If your kid gets stuck
Find the shorter rope 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 2.MD.B.5
Use addition and subtraction within 100 to solve word problems involving lengths that are given in the same units, e.g., by using drawings (such as drawings of rulers) and equations with a symbol for the unknown number to represent the problem.
Matches standards in 42 statesSee each state's code
- Alabama MA19.2.21
- Alaska 2.MD.5
- Arizona 2.MD.B.5
- Arkansas 2.GM.6
- California 2.MD.B.5
- Colorado 2.MD.B.5
- Connecticut 2.MD.B.5
- Delaware 2.MD.B.5
- District of Columbia 2.MD.B.5
- Florida MA.2.M.1.3
- Hawaii 2.MD.B.5
- Idaho 2.MD.B.5
- Illinois 2.MD.B.5
- Iowa 2.MD.B.5
- Kansas 2.MD.5
- Kentucky KY.2.MD.5
- Louisiana 2.MD.B.5
- Maine 2.MD.B.5
- Massachusetts 2.MD.B.5
- Michigan 2.MD.B.5
- Mississippi 2.MD.5
- Missouri 2.GM.C.8
- Montana MT.2.MD.5
- Nebraska 2.G.4.b
- Nevada 2.MD.B.5
- New Hampshire 2.MD.B.5
- New Jersey 2.M.B.5
- New Mexico 2.MD.B.5
- New York NY-2.MD.5
- North Carolina NC.2.MD.5
- Ohio 2.MD.5
- Oregon 2.GM.C.8
- Pennsylvania CC.2.4.2.A.6
- Rhode Island 2.MD.B.5
- South Dakota 2.MD.B.5
- Tennessee 2.MD.B.5
- Texas 111.4.b.9.E
- Utah 2.MD.5
- Vermont 2.MD.B.5
- Washington 2.MD.B.5
- West Virginia M.2.19
- Wisconsin M.2.MD.B.5