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Vedic Math: Digit Sum Techniques

This document provides practice problems and answers for a lesson on checking mathematical calculations using digit sums from the Academy of Vedic Mathematics introductory course. It includes 4 practice sets of addition, multiplication, and identification of incorrect calculations, followed by the answers. The practice problems involve adding, multiplying, and identifying errors in calculations by checking the digit sums of the results.

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65 views2 pages

Vedic Math: Digit Sum Techniques

This document provides practice problems and answers for a lesson on checking mathematical calculations using digit sums from the Academy of Vedic Mathematics introductory course. It includes 4 practice sets of addition, multiplication, and identification of incorrect calculations, followed by the answers. The practice problems involve adding, multiplying, and identifying errors in calculations by checking the digit sums of the results.

Uploaded by

MR
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Academy of Vedic Mathematics

www.vedicmaths.org
Introductory Course
4. CHECKING

Practice 1 slide 2
Add and check your answer using digit sums:

1) 489 2) 6231 3) 35 4) 56 5) 3761


55 + 686 + 47 + 27 + 1572 +

Practice 2 slide 3
Multiply and check using digit sums:

1) 7 7 2) 4 3 2 3) 6 5 4 4) 2 4 6 8
6x 7x 3x 5x

Practice 3 slide 4
Which are correct?

1) 4733 + 2834 = 6567 2) 713 x 73 = 12049

3) 8877 x 32 = 28464 4) 521 x 931 = 405051

Practice 4 slide 5
Find the last figure:

1) 9166 + 754 2) 42313 x 20314 3) 717 x 77

4) 777 + 65 + 853 5) 8872 x 38 x 29 6) 52x93 + 53x34


Academy of Vedic Mathematics
www.vedicmaths.org
Introductory Course
ANSWERS
LESSON 4

Pr 1
1) 544 (3+1=4) 2) 6917 (3+2=5) 3) 82 (8+2=1)
4) 83 (2+9=2) 5) 5333 (8+6=5)

Pr 2
1) 462 (5x6=3) 2) 3024 (9x7=9) 3) 1962 (6x3=9)
4) 12340 (2x5=1)

Pr 3
1) wrong: answer cannot must start with 7 not 6
2) wrong: answer cannot start with 1
3) wrong: not enough figures in the answer
4) wrong: answer must be more than 450000, not less

Pr 4
1) 0 2) 2 3) 9 4) 5 5) 4 6) 8

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