Choose + or − to complete each equation within 20.
Plus or Minus within 20
Your Equation Completion round
Ten alternating plus and minus equations with clear feedback.
Plus or Minus within 20Question 1 / 10
0 / 10
Choose the operator that makes the equation correct.
2?2=4
Choose plus or minus.
Round complete.
Correct first time: 0 / 10
This web round is not saved.
Decide which operation fits
Read the two operands and the result before choosing. If the result combines both numbers, choose plus. If it shows how much remains after taking away, choose minus.
The ten questions alternate between addition and subtraction, build towards crossing ten, and never reveal the correct sign after an incorrect choice.
Start without setup
No sign-up
No timer
Clear feedback
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