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Arithmetic Puzzles Created by Inna Shapiro ©2008.

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Presentation on theme: "Arithmetic Puzzles Created by Inna Shapiro ©2008."— Presentation transcript:

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2 Arithmetic Puzzles Created by Inna Shapiro ©2008

3 Problem 1 Please, replace the # and & symbols with digits # # + # & 1 9 7

4 Answer

5 Problem 2 Please, replace the # and & symbols with digits 1 # # # - & & & 1

6 Answer

7 Problem 3 Please, replace each letter with a digit: aa + bcb = deed, Note that each of those numbers is its own mirror image (left to right is same as right to left).

8 Answer We must find digits, so that the sum looks like aa + bcb = deed. Obviously d=1 and b=9 => aa + 9c9 = 1ee1, that means that a=2, c9 = 1ee1 => e=0 and c= = 1001

9 Problem 4 Please, replace letters with digits B D C E + B D A E A E C B E

10 Answer

11 Problem 5 Please, replace letters with digits a 5 2 b - b 2 5 a 8 c d c

12 Answer

13 Problem 6 How can you replace # and & symbols? 1.#### + 1 = 1&&&& 2.1&&&&&& - 1 = ######

14 Answers = – 1 =

15 Problem 7 Can you change letters a and b to digits? b a a a a + a a a a a a a a b a a a a

16 Answer

17 Problem 8 Please, replace letters with digits to get the correct answer 7abcdef : 5 = abcdef7

18 Answer : 5 =

19 Problem 9 Max wrote two-digit number. Then he inserted 0 between the two digits. The result is nine times greater than original number. What was the original number?

20 Answer The original number is 45, when Max added 0 he got 405, 45 * 9 = 405

21 Problem 10 Please add arithmetic signs and parenthesis to get correct answers: = = = = = 7

22 Answer ( ) : 5 = 3 (5 * 5 – 5) : 5 = 4 (5 – 5) * = 5 (5 * 5 + 5) : 5 = 6 (5 + 5) : = 7


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