வேக கணக்கு சவால்
Speed Maths Challenge
All techniques, one final challenge. Pick your sharpest tools from this course and race through a mixed problem set. Celebrate how far your mental maths has come.
Let's Learn
What you will learn today
Apply all Vedic Maths techniques to a mixed problem set and celebrate your mental calculation ability.
Complete toolkit check
Name the technique for each: (1) 1000 − 347? (2) 63 × 11? (3) 65²? (4) 98 × 97? (5) 25 × 12? (6) 340 ÷ 5? (Answers: Nikhilam, ×11 rule, Ekadhikena, base-100, doubling/halving, ÷5 shortcut.)
You have learned 7 distinct Vedic Maths techniques. Each one turns a difficult-looking problem into a 3-step mental exercise. The final skill is choosing the right technique for each problem — and applying it without hesitation.
ஒவ்வொரு சிக்கலுக்கும் சரியான கருவி — இதுவே மேதாவின் திறன்.
Your full toolkit
Here is every technique from this course:
- Nikhilam subtraction: all from 9, last from 10 → subtracts from powers of 10
- ×11 rule: A | (A+B) | B → multiplies any 2-digit number by 11
- Ekadhikena: n×(n+1) append 25 → squares numbers ending in 5
- Base-10 Nikhilam: deficiency × deficiency + cross → multiplies numbers near 10
- Base-100 Nikhilam: same method, numbers near 100
- Digit sum check: dr(a)×dr(b) = dr(answer) → verifies any calculation
- Doubling & Halving: a×b = 2a×b/2 → transforms multiplications
- ÷5 and ÷25: transform divisions into easier operations
The master skill: technique recognition
Look at a problem and immediately recognise which technique applies. This comes from practice — the more problems you solve, the faster the recognition becomes. Keep asking: 'Is this a ×11? A near-base? A power-of-10 subtraction?'
Challenge Round
Final mental challenge
Without writing anything: 1000 − 568 = ? Which technique? What is the answer in one pass?
You have completed Vedic Maths! You can now subtract from powers of 10 in one pass, multiply by 11 instantly, square numbers ending in 5 in two steps, multiply near 10 or 100 without long multiplication, verify answers with digit sums, and divide by 5 and 25 mentally. This is a genuine superpower.
↪ Consider practising each technique for 5 minutes daily — the improvement in exam speed will be dramatic within 4 weeks.
Key Points
முக்கிய குறிப்புகள்
- ✓8 techniques: Nikhilam subtraction, ×11, squaring ×5-endings, base-10 and base-100 Nikhilam, digit sum, doubling/halving, ÷5 and ÷25
- ✓Technique recognition is the master skill: see the problem, choose the tool
- ✓5 minutes of daily practice per technique builds lasting fluency
- ✓These tools work at any level — primary school to university
Glossary
சொல் அகராதி
Review
மீண்டும் படி
Mixed problems
கலப்பு கேள்விகள்
Technique selection
நுட்பம் தேர்வு
Mastery
தேர்ச்சி
Practice Activities
Quizவினாடி வினா
Answer each question to check your understanding.
What is 1000 − 582 using Nikhilam?
Match the Termsபொருத்துக
Click a term on the left, then click its matching definition on the right.
Click a term, then click its matching definition.
Terms
Definitions
Previous
Quick Division: Spotting Patterns
Course complete!
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