What this lesson shows
Start at 500, subtract 35: the 1st, 2nd, 3rd terms.
The worked example
The lesson works this one step by step: Start at 500, subtract 35. Then your kid tries one like it on paper.
The steps
- Start is the 1st term
- Same rule each time
- Label the places
Helping at home
Write the start as the 1st term. Use the rule on the last term to get the next one, every time, and label each term 1st, 2nd, 3rd.
If your kid gets stuck
Use the rule on the last term each time.
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.OA.D.9
Identify arithmetic patterns (including patterns in the addition table or multiplication table), and explain them using properties of operations. For example, observe that 4 times a number is always even, and explain why 4 times a number can be decomposed into two equal addends.
Matches standards in 48 statesSee each state's code
- Alabama MA19.1.9, MA19.2.5, MA19.3.9
- Alaska 2.OA.5, 3.OA.9
- Arizona 3.OA.D.9
- Arkansas 3.CAR.5
- California 3.OA.D.9
- Colorado 3.OA.D.9
- Connecticut 3.OA.D.9
- Delaware 3.OA.D.9
- District of Columbia 3.OA.D.9
- Florida MA.3.AR.3.3
- Georgia 3.PAR.3.1, 1.PAR.3.1, 1.PAR.3.2, 2.PAR.4.1, 2.PAR.4.2
- Hawaii 3.OA.D.9
- Idaho 3.OA.D.9
- Illinois 3.OA.D.9
- Indiana 1.CA.4, 3.CA.8, 2.CA.4
- Iowa 3.OA.D.9
- Kansas 3.OA.9
- Kentucky KY.3.OA.9
- Louisiana 3.OA.D.9
- Maine 3.OA.D.9
- Maryland 3.AT.A.3
- Massachusetts 3.OA.D.9
- Michigan 3.OA.D.9
- Minnesota 1.2.1.1
- Mississippi 3.OA.9
- Missouri 3.RA.E.11
- Montana MT.3.OA.9
- Nevada 3.OA.D.9
- New Hampshire 3.OA.D.9
- New Jersey 3.OA.D.9
- New Mexico 3.OA.D.9
- New York NY-3.OA.9
- North Carolina NC.3.OA.9
- North Dakota 1.AR.OA.7, 3.AR.OA.6
- Ohio 3.OA.9
- Oklahoma K.A.1.2, 1.A.1.1, 2.A.1.1, 3.A.1.1
- Oregon 3.OA.D.9
- Pennsylvania CC.2.2.3.A.4
- Rhode Island 3.OA.D.9
- South Carolina 3.PAFR.2.3, 2.PAFR.2.2
- South Dakota 3.OA.D.9
- Tennessee 3.OA.D.9, 2.OA.D.1
- Utah 3.OA.9
- Vermont 3.OA.D.9
- Virginia 1.PFA.1a, 1.PFA.1b, 1.PFA.1c, 2.PFA.1a, 2.PFA.1b, 2.PFA.1c, 3.PFA.1a, 3.PFA.1b, 3.PFA.1c, 3.PFA.1d, 3.PFA.1e
- Washington 3.OA.D.9
- West Virginia M.2.3, M.3.9
- Wisconsin M.3.OA.D.8
More in this unit
- Equal groups and arrays
- Groups or how many in each?
- Two kinds of division
- Equal jumps on a number line
- Turn the array
- Facts from facts you know
- Add the parts
- One digit times two digits
- Multiply both parts
- Three factors, any order
- Times tens and hundreds
- Counting zeros fails
- One array, four facts
- True or false?
- The answer can go first
- The unknown anywhere
- Even or odd?
- The ones digit decides
- Is it a multiple?
- A number is its own multiple
- Position is not value
- Two-step word problems
- Finish the second step
- One pattern, two ways