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🧮
Mental Arithmetic Game
Speed Addition & Mental Math Test
⚡ Quick Start
➤
Numbers appear one by one — keep a running total in your head
➤
After the sequence ends, type your final total
Start: 0
+7
→
+3
→
+12
→
+5
Total = ?
Difficulty
Easy (1-10)
Medium (1-20)
Hard (1-50)
Chain Length
4 numbers
5 numbers
6 numbers
8 numbers
Rounds
5 rounds
10 rounds
15 rounds
20 rounds
⚙ Advanced Settings
Number Display Speed (ms, 800–3000)
▲
▼
Operations
Addition Only
Addition & Subtraction
Start Challenge
Submit Answer
🎉 Challenge Complete!
Correct
Accuracy
Avg Answer Time
Settings
Try Again
Back to Start
End Challenge
📊 Recent Sessions
Clear History
📘 Detailed Instructions
How to play:
Numbers appear one at a time with + or − signs
Keep a running total in your head starting from 0
After all numbers in the chain have shown, type your final total
You'll see whether you were correct and the actual answer
Complete all rounds to get your score
Settings explained:
Difficulty:
Controls the number range (Easy: 1–10, Medium: 1–20, Hard: 1–50)
Chain Length:
How many numbers per round (4–8)
Rounds:
Total number of rounds per session
Display Speed:
How long each number stays visible (ms)
Operations:
Addition only, or mixed addition and subtraction
Scoring:
Each round scores correct or incorrect based on your final total
Accuracy = correct rounds / total rounds × 100%
Average answer time shows how fast you submit after the chain ends