What this lesson shows
4 + 3 = 6 + 1 is true: both sides make 7. 9 − 1 = 7 is false.
The worked example
The lesson works this one step by step: 4 + 3 = 6 + 1. Then your kid tries one like it on paper.
The steps
- Work out the left side
- Work out the right side
- The same: true
- Not the same: false
Helping at home
Work out the left side and write what it makes under it, then the right side. A side with one number is just that number. The same: true. Not the same: false.
If your kid gets stuck
Work out each side, then compare.
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.D.7
Understand the meaning of the equal sign, and determine if equations involving addition and subtraction are true or false. For example, which of the following equations are true and which are false? 6 = 6, 7 = 8 - 1, 5 + 2 = 2 + 5, 4 + 1 = 5 + 2.
Matches standards in 49 statesSee each state's code
- Alabama MA19.1.7
- Alaska 1.OA.7
- Arizona 1.OA.D.7
- Arkansas 1.CAR.8
- California 1.OA.D.7
- Colorado 1.OA.D.7
- Connecticut 1.OA.D.7
- Delaware 1.OA.D.7
- District of Columbia 1.OA.D.7
- Florida MA.1.AR.2.2, MA.2.AR.2.1
- Georgia 3.PAR.3.4, 1.NR.2.5
- Hawaii 1.OA.D.7
- Idaho 1.OA.D.7
- Illinois 1.OA.D.7
- Iowa 1.OA.D.7
- Kansas 1.OA.7
- Kentucky KY.K.OA.3.b, KY.1.OA.7
- Louisiana 1.OA.D.7
- Maine 1.OA.D.7
- Maryland 1.AT.A.1
- Massachusetts 1.OA.D.7
- Michigan 1.OA.D.7
- Minnesota 1.2.2.2
- Mississippi 1.OA.7
- Missouri 1.RA.A.3
- Montana MT.1.OA.8
- Nebraska 1.N.5.a
- Nevada 1.OA.D.7
- New Hampshire 1.OA.D.7
- New Jersey 1.OA.D.7
- New Mexico 1.OA.D.7
- New York NY-1.OA.7
- North Carolina NC.1.OA.7
- North Dakota 1.AR.OA.6
- Ohio 1.OA.7
- Oklahoma 1.N.2.2, 2.A.2.3
- Oregon 1.OA.D.7
- Rhode Island 1.OA.D.7
- South Carolina 1.PAFR.1.1, 2.PAFR.1.2
- South Dakota 1.OA.D.7
- Tennessee 1.OA.D.7
- Texas 111.3.b.5.E
- Utah 1.OA.7
- Vermont 1.OA.D.7
- Virginia 1.CE.1h, 1.CE.1i, 1.CE.1j, 1.CE.1k, 2.CE.1i, 3.CE.1d, 2.CE.1j
- Washington 1.OA.D.7
- West Virginia M.1.7
- Wisconsin M.1.OA.D.7
- Wyoming 1.OA.7