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Choose the Bigger Number
⚡ Quick Start
➤
Two expressions appear — click the one with the
bigger result
➤
Higher difficulty = results are closer. You don't need to calculate exactly — estimate quickly!
7 × 8
30 + 24
Operation Type:
Addition (+)
Subtraction (−)
Multiplication (×)
Mixed Operations
Difficulty:
Easy (diff 20+)
Medium (diff 10-20)
Hard (diff 3-10)
Super Hard (complex)
Time Limit:
30 seconds
60 seconds
90 seconds
Start Test
Correct:
0
Wrong:
0
Session Complete!
TRY AGAIN
End Challenge
📊 Recent Results
Clear Results
📘 Detailed Instructions
How to use:
Select operation type (addition, subtraction, multiplication, or mixed)
Choose difficulty level - controls how close the two results are to each other
Set your time limit
Click START CHALLENGE to begin
Two arithmetic expressions will appear side by side
Click on the expression that has the BIGGER result
You don't need to calculate exactly - estimate and choose quickly
After each choice, new expressions appear automatically
Answer as many as possible before time runs out
Difficulty levels:
Easy:
Results differ by 20+ (easy to tell which is bigger)
Medium:
Results differ by 10-20 (moderate challenge)
Hard:
Results differ by 3-10 (requires careful estimation)
Super Hard:
Results differ by 3-10 with complex expressions (two-digit numbers, harder to estimate)
Scoring metrics:
Total Attempted:
How many comparisons you made
Correct:
Number of correct choices
Wrong:
Number of incorrect choices
Accuracy:
Correct / Attempted × 100%
CPM (Correct Per Minute):
Speed score normalized to 60 seconds
Avg Reaction Time:
Average time per correct answer
Tips for improvement:
Don't calculate exactly - use estimation and number sense
Look for patterns: multiplication usually gives bigger results than addition
With practice, you'll recognize magnitudes instantly
Speed matters, but accuracy is more important
Start with Easy difficulty to build confidence