Download presentation

Presentation is loading. Please wait.

Published byKaylee Meyer Modified over 3 years ago

2
Arithmetic Puzzles Created by Inna Shapiro ©2008

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

4
Answer 9 9 + 9 8 1 9 7

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

6
Answer 1 0 0 0 - 9 9 9 1

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, 22 + 9c9 = 1ee1 => e=0 and c=7 22 + 979 = 1001

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

10
Answer 5 2 4 0 + 5 2 1 0 1 0 4 5 0

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

12
Answer 9 5 2 1 - 1 2 5 9 8 2 6 2

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

14
Answers 1.9999 + 1 = 10000 2.1000000 – 1 = 999999

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 2 9 9 9 9 + 9 9 9 9 9 9 9 9 2 9 9 9 9

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

18
Answer 714285 : 5 = 142857

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: 5 5 5 5 = 3 5 5 5 5 = 4 5 5 5 5 = 5 5 5 5 5 = 6 5 5 5 5 = 7

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

Similar presentations

OK

Reverse Subtraction Objectives: do a subtract by adding check your answer by adding.

Reverse Subtraction Objectives: do a subtract by adding check your answer by adding.

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on second law of thermodynamics biology Ppt on next generation 2-stroke engine or 4-stroke Ppt on endangered species of plants and animals in india Ppt on site search engine Ppt on video teleconferencing Ppt on our country india class 6 Ppt on growing old gracefully Ppt on solar energy devices Ppt on machine translation patent Ppt on e-retailing in india