DAY 209 at 7puzzleblog.com

Today’s Challenge

This particular number puzzle is very famous in Japan, having been used as part of a TV advert for Google’s Nexus 7 tablet.  Click this YouTube link for a browse.

Using the numbers 1, 1, 5 and 8 exactly once each, with + – × and ÷ available, can you beat this tricky Japanese challenge by arriving at the target answer 10?

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Answers

. . . can be found when clicking this.

7puzzleblog

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Welcome

the7puzzlecompanyA warm welcome to 7puzzleblog.com, the World’s Top Daily Number Puzzle Website – and home to the 7puzzle company.

We do many mathematical things at the 7puzzle company, one of which is to design and produce daily number puzzles for our many followers from over 150 different countries and territories around the world.

Our aim is to help improve people’s basic knowledge and confidence of number and arithmetic in a fun way, so start your numerical adventure by having a go at solving our latest number puzzle shown above – and improve your number & logic skills too!

Our bumper compendium of challenges at 7puzzleblog.com contains a different number puzzle every day, with the added bonus of having an additional three number puzzles daily from January 1, DAY 1, to March 25, DAY 85; 255 extra challenges which are perfect for revision purposes.  These are related to our signature board game, the 7puzzle game, and a superb resource for teachers and parents to utilise with the children!

Click on the dates below to access our number puzzles and we will reply to all comments and answers received as well as tweets to @7puzzle and e-mails to paul@7puzzle.com.

Spread the message about our fabulous daily number puzzles at 7puzzleblog.com to family, friends, students and colleagues.  Answers are provided and can be found here!

To find out more about the 7puzzle company, simply click this link.

Paul Godding       Owner, the 7puzzle company

7puzzleblog

January/Ionawr/Enero/Janeiro/Janvier/Eanáir/Gennaio

1        2        3        4        5        6        7        8

9       10       11       12       13       14       15       16

17       18       19       20       21       22       23       24

25       26       27       28       29       30       31

February/Chwefror/Febrero/Fevereiro/Février/Feabhra/Febbraio

1        2        3        4        5        6        7        8

9       10       11       12       13       14       15       16

17       18       19       20       21       22       23       24

25       26       27       28       29

March/Mawrth/Marzo/Março/Mars/Márta/Marzo

1        2        3        4        5        6        7        8

9       10       11       12       13       14       15       16

17       18       19       20       21       22       23       24

25       26       27       28       29       30       31

April/Ebrill/Abril/Abril/Avril/Aibreán/Aprile

1        2        3        4        5        6        7        8

9       10       11       12       13       14       15       16

17       18       19       20       21       22       23       24

25       26       27       28       29       30

May/Mai/Mayo/Maio/Mai/Bealtaine/Maggio

1        2        3        4        5        6        7        8

9       10       11       12       13       14       15       16

17       18       19       20       21       22       23       24

25       26       27       28       29       30       31

June/Mehefin/Junio/Junho/Juin/Meitheamh/Guigno

1        2        3        4        5        6        7        8

9       10       11       12       13       14       15       16

17       18       19       20       21       22       23       24

25       26       27       28       29       30

July/Gorffennaf/Julio/Julho/Juillet/Iúil/Luglio

1        2        3        4        5        6        7        8

9       10       11       12       13       14       15       16

17       18       19       20       21       22       23       24

25       26       27       28       29       30       31

August/Awst/Agosto/Agosto/Août/Lúnasa/Agosto

1        2        3        4        5        6        7        8

9       10       11       12       13       14       15       16

17       18       19       20       21       22       23       24

25       26       27       28       29       30       31

September/Medi/Septiembre/Setembro/Septembre/MeánFómhair/Settembre

1        2        3        4        5        6        7        8

9       10       11       12       13       14       15       16

17       18       19       20       21       22       23       24

25       26       27       28       29       30

October/Hydref/Octubre/Outubro/Octobre/DeireadhFómhair/Ottobre

1        2        3        4        5        6        7        8

9       10       11       12       13       14       15       16

17       18       19       20       21       22       23       24

25       26       27       28       29       30       31

November/Tachwedd/Noviembre/Novembro/Novembre/Samhain/Novembre

1        2        3        4        5        6        7        8

9       10       11       12       13       14       15       16

17       18       19       20       21       22       23       24

25       26       27       28       29       30

December/Rhagfyr/Diciembre/Dezembro/Décembre/Nollaig/Dicembre

1        2        3        4        5        6        7        8

9       10       11       12       13       14       15       16

17       18       19       20       21       22       23       24

25       26       27       28       29       30       31

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. . . and there’s more!

As well as the many hundreds of number challenges here at 7puzzleblog.com, each of the following bullet points describes an educational activity the 7puzzle company is currently involved in:

The main objective of the 7puzzle company is to spread the message about the positive impact games & puzzles can have in the classroom, and thus help to improve the maths skills of children everywhere.

We are able to do this successfully through the innovative PuzzleFriday concept and recommend all schools to invest in our tried and tested packs of resources.

Please feel free to follow my tweets at @7puzzle or get in touch by e-mail at paul@7puzzle.com.

7puzz

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DAY 208

Today’s Challenge

This puzzle invites you to use seven 2’s (2, 2, 2, 2, 2, 2 and 2) with + – × and ÷ available.

For instance, to make 1 and 2, you could simply do:

  • 2 + (2÷2)  (2÷2)  (2÷2)  =  1
  • 2 + 2 + 2 + 2  2  2  2  =  2

Can you show how you can use seven 2’s to make 3, 4, and 5?

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Answers

. . . can be found when clicking this.

7puzzleblog

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DAY 207

Today’s Challenge

Find the sum of the first seven 3-digit numbers that do not contain a 0, 1 or 2 as part of their number. What is your total?

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Answers

. . . can be found when clicking this.

7puzzleblog

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DAY 206

Today’s Challenge

Study the seven clues below and place the numbers 1-9 into the nine positions. Each number should appear exactly once:

x              x              x

x              x              x

x              x              x

Clues:

  1. The 8 is next to, and directly right of, the 9
  2. The 9 is next to, and directly above, the 6
  3. The 6 is next to, and directly right of, the 4
  4. The 4 is higher than the 1
  5. The 1 is further right of the 3
  6. The 3 is lower than the 7
  7. The 7 is next to, and directly above, the 5

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Answers

. . . can be found when clicking this.

7puzzleblog

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DAY 205

Today’s Challenge

Another number puzzle associated with the possible game, a board game designed by me, and excellent in improving both mental arithmetic and strategy skills.

Using the three numbers 1, 2 and 4 exactly once each, with + – × ÷ available, is it mathematically possible to make all whole numbers from 1 to 12 inclusive?

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Answers

. . . can be found when clicking this.

7puzzleblog

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DAY 204

Today’s Challenge

This is a Countdown number puzzle from the popular Channel 4 show in the UK. These numbers were chosen by the host to test some competing ex-champions!  There is an answer available on YouTube but, unlike the TV show, we always look for a way that utilises all SIX numbers:

Using the six numbers 1, 5, 7, 10, 12 and 62 once each, with + – × and ÷ available, can you arrive at the target answer of 130?

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Answers

. . . can be found when clicking this.

7puzzleblog

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DAY 203

Today’s Challenge

Start with the number 7 and complete the following 16 arithmetic steps:

  • multiply by 10
  • 40 percent of this
  • double it
  • multiply the digits together
  • increase by 20 percent
  • divide by three
  • increase by 50 percent
  • one-third of this
  • double it
  • square it
  • five-sixths of this
  • decrease by 10 percent
  • divide by three
  • add 39
  • increase by 20 percent
  • seven-ninths of this

What is your answer?

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Answers

. . . can be found when clicking this.

7puzzleblog

 

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DAY 202

Today’s Challenge

Add together the first seven odd numbers that do not contain a 3, 5 or 7 as part of their number, or are not multiples of 3, 5 or 7.  What is your answer?

.

Answers

. . . can be found when clicking this.

7puzzleblog

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