Multiply Any Number by 11 in Seconds: Cool Math Hack for Students

Multiply Any Number by 11 in Seconds: Having the appropriate strategies may make math enjoyable and simple! One subject in which students frequently struggle is multiplication, particularly when working with bigger numbers. What if, however, you could quickly multiply any number by 11 without the need for a calculator? This clever math trick is not only entertaining, but it also saves time on competitive examinations, school exams, and mental math problems. You may learn how to multiply by 11 with this easy, step-by-step method.

The 11 Multiplication Trick Explained

Long multiplication steps are not necessary when multiplying any number by 11. For two-digit and even greater integers, this method is ideal. Let's dissect it:

1. For Two-Digit Numbers:

• Example: 32 × 11

• Step 1: Split the digits (3 _ 2).

• Step 2: Add them together (3 + 2 = 5).

• Step 3: Place the result in the middle (3 5 2).

• Answer: 352

2. As with regular addition, carry over the extra digit if the total number of digits is 10 or greater.

3. For Three-Digit Numbers and Beyond:

• Example: 314 × 11

• Step 1: Write the first digit (3).

• Step 2: Add each pair of neighboring digits:

• 3 + 1 = 4

• 1 + 4 = 5

• Step 3: Write the last digit (4).

• Answer: 314 × 11 = 3454

Why these tricks are important to learn

• Exam Time Saving: Mental math rounds allow you to solve multiplication questions more quickly.

• Increases Confidence: Show off your rapid math prowess to your peers and teachers.

• Strengthens Mental Math: Excellent exercise for rational thought and brain development.

Quick Tips for Students

• To gain confidence, start with small numbers first.

• Improve your speed by practicing without writing anything down.

• To save important seconds during Olympiads and quizzes, use this trick.

Practice These Examples

Students should practice these examples for a better understanding of the trick: 

Also Check:

5 Super-Easy Tricks to Multiply Any Number Faster

How to Multiply 2-Digit Numbers Mentally – Step-by-Step for Kids