Magic Ved
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Instructions

Multiply two digit number by 11
  • Trick
  • Practice
example

Example 1 53 x 11 = 583

Step 1 - Add both digits of the two digit number:

5 + 3 = 8

Step 2 - Place the result in between both digits:

583Answer
example

Example 2 59 x 11 = 649

Step 1 - Add both digits of the two digit number:

5 + 9 = 14

Step 2 - Carry the 1 when the result is greater than 9

5 + 1 = 6

649Answer
  1. 16 x 11 =
  2. 62 x 11 =
  3. 84 x 11 =
  1. 54 x 11 =
  2. 76 x 11 =
  3. 43 x 11 =
Square numbers ending in 5
  • Trick
  • Practice
example

Example 1 85 x 85 = 7225

Step 1 - Multiply the first digit by the first digit plus one:

8 x (8 + 1) = 8 x 9 = 72

Step 2 - Write the number 25 next to the number from the first step:

7225Answer
example

Example 2 45 x 45 = 2025

Step 1 - Multiply the first digit by the first digit plus one:

4 x ( 4 + 1) = 4 x 5 = 20

Step 2 - Write the number 25 next to the number from the first step:

2025Answer
  1. 15 x 15 =
  2. 65 x 65 =
  3. 55 x 55 =
  1. 25 x 25 =
  2. 75 x 75 =
  3. 35 x 35 =
Multiply two digit numbers having same tens digit and ones digits add up to 10
  • Trick
  • Practice
example

Example 1 38 x 32 = 1216

Step 1 - Multiply the first digit by the first digit plus one:

3 x (3 + 1) = 3 x 4 = 12

Step 2 - Multiply the rightmost digits:

8 x 2 = 16

Step 3 - Put the result from step 2 next to result from step 1:

1216Answer
example

Example 2 69 x 61 = 4209

Step 1 - Multiply the first digit by the first digit plus one:

6 x (6 + 1) = 6 x 7 = 42

Step 2 - Multiply the rightmost digits:

9 x 1 = 09 (if the result is a single digit put a 0 in front of it)

Step 3 - Put the result from step 2 next to result from step 1:

4209Answer
  1. 43 x 47 =
  2. 24 x 26 =
  3. 59 x 51 =
  1. 23 x 27 =
  2. 37 x 33 =
  3. 94 x 96 =
Square numbers in the 50’s
  • Trick
  • Practice
example

Example 1 58 x 58 = 3364

Step 1 - Add 25 to ones digit:

25 + 8 = 33

Step 2 - Square the ones digit number:

8 x 8 = 64

Step 3 - Place the result from step 2 next to the result from step 1 :

3364Answer
example

Example 2 54 x 54 = 2916

Step 1 - Add 25 to ones digit:

25 + 4 = 29

Step 2 - Square the ones digit number:

4 x 4 = 16

Step 3 - Place the result from step 2 next to the result from step 1 :

2916Answer
  1. 57 x 57 =
  2. 59 x 59 =
  3. 52 x 52 =
  1. 51 x 51 =
  2. 55 x 55 =
  3. 58 x 58 =
Multiply even number by 5
  • Trick
  • Practice
example

Example 1 242 x 5 = 1210

Step 1 - Divide the given number by 2:

242/2 = 121

Step 2 - Write 0 next to the result from step 1 :

1210Answer
example

Example 2 112 x 5 = 560

Step 1 - Divide the given number by 2:

112 / 2 = 56

Step 2 - Write 0 next to the result from step 1 :

560Answer
  1. 106 x 5 =
  2. 612 x 5 =
  3. 216 x 5 =
  1. 602 x 5 =
  2. 84 x 5 =
  3. 76 x 5 =
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