🚀 Practice Modes
📖
Untimed
1. Learn Mode
Understand mental calculation techniques with worked examples, progressive hints, and step-by-step solutions.
Learn Techniques
🎯
10 / 20 / 30 / ∞
2. Practice Mode
Build accuracy and consistency with optional hints, retries on wrong answers, and custom session lengths.
Configure Practice
⚡
Timed Sprints
3. Speed Challenge
60-second sprints (12, 20, or 30 questions) or custom timer limits. Improve speed without careless guessing.
Launch Sprint
🔁
0 Saved
4. Mistake Revision
Turn errors into improvement. Retry incorrect, skipped, and bookmarked questions filtered by topic.
Open Mistake Hub📚 Calculation Practice Categories
📈 Speed & Accuracy Trend
Correct Answers / Min (CPM) • Last 10 Sessions📊 Topic Mastery & Status
Easy / Med / Hard
PRACTICE
Simplification
Medium
Q: 1 / 10
✓
0
🔥
0
Calculate the exact value
84 × 86 = ?
Press Enter or click Check Answer
SESSION COMPLETED
Session Performance
0
/ 10 Correct
Attempt Breakdown
0✓ · 0✗ · 0⏭
Accuracy (Attempted)
0%
Speed (Correct/Min)
0.0 CPM
Total / Avg Time · Streak
0s (0s/Q) · 0🔥
📋 Question-by-Question Review & Step-by-Step Solutions
Click any question to toggle explanation🔁 Mistake Revision & Bookmarks
Retry incorrect, skipped, or bookmarked questions without revealing the answer prematurely. Solve a question twice in revision or click "Remove" to clear it.