Compliments to 10, 20, 100 Vedic Maths Tricks for Class 3

What are Vedic Maths tricks for Class 3?

Vedic mathematics is an enhanced structure of mental Maths based on ancient Indian texts. It is based on sixteen operational principles, or sutras (spiritual rules), that encourage flexible and out-of-the-familiar thinking. These avoid the tedious exercise of making children sit through long lists of steps from textbooks and train them to identify patterns involving natural numbers.

To a novice, Vedic Maths tricks of Class 3 become like operational shortcuts. Here, school curriculums switch pupils from single-digit sums to double- and triple-digit calculations. Traditional methods need students to note multiple steps of borrowing down on paper, which produces careless mistakes.

Compliments to 10 20 100 Vedic Maths Tricks

So what is the secret behind super-quick mental calculations? The Complete Guide to Number Complements A complement is merely the amount needed to add a number up to some target base (of type 10, 20 or 100).

1. Complements to 10 (The Essential Foundation)

For instance, to compute the 10's complement of a number, you merely need to search for what single digit (0–9) needs to be combined with this starting figure so that its sum equals exactly 10. This serves as the essential basis for all rapid calculation techniques.

• The complement of 8 relative to 10 is 2 (because 8 + 2 = 10)

• The complement of 6 relative to 10 is 4 (because 6 + 4 = 10)

• The complement of 3 relative to 10 is 7 (because 3 + 7 = 10)

• The complement of 1 relative to 10 is 9 (because 1 + 9 = 10)

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2. Complements to 20 (The Step-Up Technique)

When it comes to finding complements for a base of twenty, students learn you look first at units and then round up to the next milestone (ten). Such handy fast subtraction strategies as children who are faced with needing to subtract any number from 11 through 19, which come up out of a total of 20.

• Example: Calculate the complement of 13 relative to 20 (which means evaluating 20 - 13).

• Isolate the units digit, which is 3.

• Find the standard complement of 3 relative to 10, which is 7.

• The mental answer is 7.

• Example: Calculate the complement of 16 relative to 20 (which means evaluating 20 - 16).

• Isolate the units digit, which is 6.

• Find the standard complement of 6 relative to 10, which is 4.

• The mental answer is 4.

3. Complements to 100 (The Nikhilam Magic)

This is where the power of compliments to 10 20 100 Vedic Maths tricks truly starts becoming undeniable. If a pupil wants to subtract 5 from a two-digit number using borrowing, then the only time they will need to borrow is when going over into unit fields across column boundaries. They just take the tens digit and then subtract the units digit from 10.

• Example: Find the complement of 74 relative to 100 (which means evaluating 100 - 74).

• Step 1: Subtract the first number (7) from 9. This gives you: 9 - 7 = 2.

• Step 2: Subtract the final number (4) from 10. This gives you: 10 - 4 = 6.

• Step 3: Put the two answers next to each other to get 26.

• Therefore, the complement of 74 is 26.

• Example: Find the complement of 42 relative to 100 (which means evaluating 100 - 42).

• Step 1: Subtract the first number (4) from 9. This gives you: 9 - 4 = 5.

• Step 2: Subtract the final number (2) from 10. This gives you: 10 - 2 = 8.

• Step 3: Put the two answers next to each other to get 58.

• Therefore, the complement of 42 is 58.

Read More - Adding 9, 8, 11 Vedic Maths Tricks for Class 3

Practice Sheet for Compliments to 10 20 100 Vedic Maths Tricks 

The number one key to making these mental methods an automatic behaviour is regular, intentional practice. Ask your child to complete all three sets/levels mentally without using a pen and paper or counting on their fingers.

Challenge Set A: Fast Complements to 10

• What is the complement of 2? (Answer: 8)

• What is the complement of 7? (Answer: 3)

• What is the complement of 4? (Answer: 6)

• What is the complement of 9? (Answer: 1)

• What is the complement of 5? (Answer: 5)

Challenge Set B: Target 20 Mental Subtraction

• Evaluate: 20 - 14 = _____ (Answer: 6)

• Evaluate: 20 - 12 = _____ (Answer: 8)

• Evaluate: 20 - 18 = _____ (Answer: 2)

• Evaluate: 20 - 15 = _____ (Answer: 5)

• Evaluate: 20 - 11 = _____ (Answer: 9)

Read More - Learn Subtraction Without Borrowing (Class 3)

Challenge Set C: The 100s Master Run (Apply the Nikhilam Rule)

• Find the complement of 63.

• Think: 9 - 6 = 3, and 10 - 3 = 7. (Answer: 37)

• Find the complement of 25.

• Think: 9 - 2 = 7, and 10 - 25 becomes 10 - 5 = 5. (Answer: 75)

• Find the complement of 88.

• Think: 9 - 8 = 1, and 10 - 8 = 2. (Answer: 12)

• Find the complement of 31.

• Think: 9 - 3 = 6, and 10 - 1 = 9. (Answer: 69)

• Find the complement of 56.

• Think: 9 - 5 = 4, and 10 - 6 = 4. (Answer: 44)

How Does CuriousJr Help with Class 3 Mental Maths?

Reading about mathematical shortcuts gives an awesome introduction; however, to cement these skills, lively, engrossed faces are a must. And this is the very thing that CuriousJr kids mental maths class does, by turning abstract arithmetic concepts into ultra-structured digital modules for kids.

• Gamified Learning Journeys: Make boring basic arithmetic drills into game-like quests with Curious Jr while ensuring that young Class 3 pupils remain highly motivated to learn.

• Bite-Sized Conceptual Quizzes: The platform breaks down complex, rule-based objectives into small interactive challenges to avoid cognitive overload.

• Instant Performance Feedback: Pupils obtain real-time feedback and confirmation on their answers, enabling them to identify errors and correct the logic immediately.

• Targeted Mental Exercises: Curious Jr is targeting mental exercises specifically related to basic number complements in a regular way, so children get practice performing those critical skills as needed.

• Trackable Speed Improvements: The platform monitors response times, encouraging pupils to improve their calculation speed and gradually build confidence over time.