DAY 78:

Today’s Challenge

Using the three numbers 5, 5 and 5 once each, with + – × ÷ available, which seven target numbers from 1-30 are mathematically possible to achieve?

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The 7puzzle Challenge

The playing board of the 7puzzle game is a 7-by-7 grid of 49 different numbers, ranging from up to 84.

The 4th & 7th rows contain the following fourteen numbers:

3     4     10     11     24     27     30     32     35     44     54     60     70     77

Which four different numbers have a sum of 100?

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Answers

. . . can be found when clicking this.

7puzzleblog

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WELCOME

the7puzzlecompanyA warm welcome to 7puzzleblog.com and our compendium of daily number puzzles which we design and produce for our many followers from over 160 different countries and territories.

As this website is home to the 7puzzle company, we are also the place to visit for a variety of mathematical things, including online maths tuition. Get in touch for further details.

Our aim is to improve basic knowledge and confidence of arithmetic in a fun way, so start your numerical adventure by trying to solve our latest number puzzles shown above!

From our bumper collection of challenges at 7puzzleblog.com, we post TWO number puzzles each day; one of which is related to the 7puzzle game, our signature board game and a superb tool for teachers and parents to utilise with children.

Click on the dates below to access all our number puzzles and we will reply to all comments & answers, 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 also provided.

Paul Godding       Owner, the 7puzzle company

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7puzzleblog

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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

7puzz

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… AND THERE’S MORE!

As well as the many hundreds of number challenges posted here at 7puzzleblog.com, some of the educational activities the 7puzzle company is currently involved in are:

  • supporting students with one-to-one maths tuition,
  • delivering school-based maths/puzzle workshops,
  • designing board games, card games, puzzles & books for use in our workshops and to sell to schools and the general public,
  • encouraging parents to get involved with their children’s mathematical education through our Roll3Dice initiative,
  • . . . and much more!

One of the main objectives 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 mathematical skills of children everywhere.

Full details of all the above can be found by clicking About Us.

Please feel free to tweet us at @7puzzle or send an e-mail to paul@7puzzle.com.

7puzz

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DAY 77:

Today’s Challenge

The two sections below both contain eight letters, A to H.  Each letter has a calculation attached.  Which letter is the only one to have the SAME answer in BOTH sections?

  • Section 1

E:8×3   B:30÷2   H:15+3   A:6×6   G:36÷3   C:40–20   F:18+12   D:32–8

  • Section 2

G:10+6   F:6×5   C:9×4   E:40÷2   H:30–18   A:15+9   D:30–12   B:120÷4

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The 7puzzle Challenge

The playing board of the 7puzzle game is a 7-by-7 grid of 49 different numbers, ranging from up to 84.

The 4th & 7th rows contain the following fourteen numbers:

3     4     10     11     24     27     30     32     35     44     54     60     70     77

Which two numbers have a difference of 36?

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Answers

. . . can be found when clicking this.

7puzzleblog

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DAY 76:

Today’s Challenge

It is possible to use seven 4’s (4, 4, 4, 4, 4, 4 and 4) once each, together with the four operations + – × ÷ to make all the different target numbers from 1, 2 and 3.

For instance, to arrive at the number 1 you could do:

4 – [ (4÷4) + (4÷4) + (4÷4) ] = 1

Your task is just to make the next two target numbers, 2 and 3.  Can you make them?

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The 7puzzle Challenge

The playing board of the 7puzzle game is a 7-by-7 grid of 49 different numbers, ranging from up to 84.

The 4th & 7th rows contain the following fourteen numbers:

3     4     10     11     24     27     30     32     35     44     54     60     70     77

What is the sum of the multiples of 9?

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Answers

. . . can be found when clicking this.

7puzzleblog

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DAY 75:

Today’s Challenge

Start with the number 13, then follow these ten arithmetic steps:

2     +5     ÷2     ×5     4     ÷9     +1     ×5     1     ÷4     =     ?

What is your final answer?

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The 7puzzle Challenge

The playing board of the 7puzzle game is a 7-by-7 grid of 49 different numbers, ranging from up to 84.

The 1st & 6th rows contain the following fourteen numbers:

2     5     9     12     14     15     18     20     22     33     40     49     56     72

Which four different numbers, when added together, makes a total of 100?

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Answers

. . . can be found when clicking this.

7puzzleblog

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DAY 74:

Today’s Challenge

Can you arrive at the target answer of 24 by using each of the digits 3, 3, 3 and 5 exactly once each, and with + – × ÷ available?

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The 7puzzle Challenge

The playing board of the 7puzzle game is a 7-by-7 grid of 49 different numbers, ranging from up to 84.

The 1st & 6th rows contain the following fourteen numbers:

2     5     9     12     14     15     18     20     22     33     40     49     56     72

Which three numbers, when each is multiplied by 4, have their answers on the list?

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Answers

. . . can be found when clicking this.

7puzzleblog

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DAY 73:

Today’s Challenge

As well as 9+4+1, there are SEVEN other ways of making 14 when adding together three unique digits from 1-9.  List these seven combinations.

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The 7puzzle Number Challenge

The playing board of the 7puzzle game is a 7-by-7 grid of 49 different numbers, ranging from up to 84.

The 1st & 6th rows contain the following fourteen numbers:

2     5     9     12     14     15     18     20     22     33     40     49     56     72

What is the sum of the multiples of 6?

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Answers

. . . can be found when clicking this.

7puzzleblog

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DAY 72:

Today’s Challenge

From the numbers 1 to 20 inclusive, find the only one that remains when you eliminate all square numbers, multiples of 6, factors of 40 and odd numbers.

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The 7puzzle Challenge

The playing board of the 7puzzle game is a 7-by-7 grid of 49 different numbers, ranging from up to 84.

The 1st & 6th rows contain the following fourteen numbers:

2     5     9     12     14     15     18     20     22     33     40     49     56     72

How many square numbers are present?

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Answers

. . . can be found when clicking this.

7puzzleblog

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DAY 71:

Today’s Challenge

Start at the number 100 and keep on subtracting 7 until the answer is a single-digit number.  What is this single-digit number?

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The 7puzzle Challenge

The playing board of the 7puzzle game is a 7-by-7 grid of 49 different numbers, ranging from up to 84.

The 1st & 6th rows contain the following fourteen numbers:

2     5     9     12     14     15     18     20     22     33     40     49     56     72

Which number is the sum of three different numbers also on the list?

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Answers

. . . can be found when clicking this.

7puzzleblog

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