What this lesson shows
8 + 5: move 2 into the ten frame, then 10 + 3 = 13.
The worked example
The lesson works this one step by step: 8 + 5 = □. Then your kid tries one like it on paper.
The steps
- Fill one ten frame
- Move some over to make 10
- 10 plus what is left
Helping at home
Ask how many more the bigger number needs to make 10. Take that many from the other number, then add what is left to 10. Draw two ten frames if it helps.
If your kid gets stuck
How many more to make 10?
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 1.OA.C.6
Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 - 4 = 13 - 3 - 1 = 10 - 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 - 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13). - Common Core 2.OA.B.2
Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.
Matches a standard in all 50 states and DCSee each state's code
- Alabama MA19.1.6a, MA19.1.6b, MA19.1.6c, MA19.1.6d, MA19.1.6e, MA19.2.2a
- Alaska 1.OA.6, 2.OA.2
- Arizona 2.OA.B.2
- Arkansas 1.CAR.1, 1.CAR.2, 2.CAR.1
- California 1.OA.C.6, 2.OA.B.2
- Colorado 1.OA.C.6, 2.OA.B.2
- Connecticut 1.OA.C.6, 2.OA.B.2
- Delaware 1.OA.C.6, 2.OA.B.2
- District of Columbia 1.OA.C.6, 2.OA.B.2
- Florida MA.1.NSO.2.1, MA.1.NSO.2.2, MA.2.NSO.2.1
- Georgia 1.NR.2.1, 1.NR.2.2, 1.NR.2.4, 2.NR.2.1
- Hawaii 1.OA.C.6, 2.OA.B.2
- Idaho 1.OA.C.6, 2.OA.B.2
- Illinois 1.OA.C.6, 2.OA.B.2
- Indiana 1.CA.1
- Iowa 1.OA.C.6, 1.OA.IA.C.2, 1.OA.IA.C.1.b, 2.OA.B.2
- Kansas 1.OA.6, 2.OA.2
- Kentucky KY.1.OA.6.b, KY.2.OA.2
- Louisiana 1.OA.C.6, 2.OA.B.2
- Maine 1.OA.C.6, 2.OA.B.2
- Maryland 1.NOS.E.10.a, 1.NOS.E.10.b, 1.NOS.E.12.a, 1.NOS.E.12.b, 1.NOS.E.13.a, 1.NOS.E.13.b, 2.NOS.B.6.a, 2.NOS.B.6.b
- Massachusetts 1.OA.C.6, 2.OA.B.2
- Michigan 1.OA.C.6, 2.OA.B.2
- Minnesota 1.1.2.2, 2.1.2.1, 2.1.2.2
- Mississippi 1.OA.6, 2.OA.2
- Missouri 1.RA.C.7, 1.RA.C.8, 2.RA.A.1
- Montana MT.1.OA.3, MT.1.OA.6, MT.1.OA.7, MT.2.OA.2
- Nebraska 1.N.4.a, 1.N.4.b, 2.N.4.a
- Nevada 1.OA.C.6, 2.OA.B.2
- New Hampshire 1.OA.C.6, 2.OA.B.2
- New Jersey 1.OA.C.6, 2.OA.B.2
- New Mexico 1.OA.C.6, 2.OA.B.2
- New York NY-1.OA.6.a, NY-2.OA.2.a, NY-2.OA.2.b
- North Carolina NC.1.OA.9, NC.1.OA.6.a, NC.1.OA.6.b, NC.1.OA.6.c, NC.1.OA.6.d, NC.1.OA.6.e, NC.1.OA.6.f, NC.2.OA.2
- North Dakota 1.AR.OA.1, 1.AR.OA.2, 1.AR.OA.3, 2.AR.OA.1
- Ohio 1.OA.6, 2.OA.2
- Oklahoma 1.N.2.3, 2.N.2.1, 2.N.2.2
- Oregon 1.OA.C.6, 2.OA.B.2
- Pennsylvania CC.2.2.2.A.2
- Rhode Island 1.OA.C.6, 2.OA.B.2
- South Carolina 1.PAFR.1.4, 1.PAFR.1.2, 2.PAFR.1.5
- South Dakota 1.OA.C.6, 2.OA.B.2.a, 2.OA.B.2.b
- Tennessee 1.OA.C.5, 1.OA.C.6, 2.OA.B.2
- Texas 111.3.b.3.D, 111.3.b.3.E, 111.4.b.4.A
- Utah 1.OA.6.a, 1.OA.6.b, 2.OA.2.a, 2.OA.2.b
- Vermont 1.OA.C.6, 2.OA.B.2
- Virginia 1.CE.1a, 1.CE.1b, 1.CE.1c, 1.CE.1d, 1.CE.1e, 2.CE.1d, 2.CE.1e, 2.CE.1h
- Washington 1.OA.C.6, 2.OA.B.2
- West Virginia M.1.6, M.2.2
- Wisconsin M.1.OA.C.6, M.2.OA.B.2
- Wyoming 1.OA.6, 2.OA.2
More in this unit
- Ways to make 10
- Facts that go together
- Read the story first
- Doubles and near doubles
- Subtract back to ten
- Don’t flip the ones
- Subtraction is a missing part
- Which addition helps?
- Act out the story
- How many were added?
- How many at the start?
- How many more?
- “More” can mean subtract
- Count on to add, back to subtract
- Five and some more