DAY 178:

Today’s Challenge

Can you arrive at the target answer of 7 by using each of the numbers 0.2, 0.5, 2 and 2.5 exactly once each, and with +  × ÷ available?

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

What is the sum of the factors of 36?

Make 178 Challenge

Can you arrive at 178 by inserting 10, 12, 15 and 20 into the gaps below?

(◯×◯)–(◯÷◯) = 178

Answers can be found here.

Click Paul Godding for details of online math tuition. Wherever you are in the world, please get in touch.

 

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WELCOME

A 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 & territories.

We are also the place to visit for a variety of different mathematical things, including our venture into online math tuition.  Get in touch for further details.

The World’s Top Daily Number Puzzle Website

This is official – simply type ‘daily number puzzles‘ into Google or Bing and you’ll see 7puzzleblog.com listed at #1. We appreciate your continued support.

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.

How is our website set up?

Just scroll to the top for our most recent challenges.

Click on the dates below to access the remainder of our number puzzles and we will reply to all comments & answers, tweets to @7puzzle and e-mails to paul@7puzzle.com.

We now post THREE number puzzles each day from our bumper collection of challenges, one of which is related to the 7puzzle game. Our signature board game is a superb tool for teachers and parents to utilise with children as well as for their own personal challenge.

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Tell family, friends, students, colleagues and puzzle enthusiasts about our fabulous daily number puzzles at 7puzzleblog.comAnswers are also provided!

Enjoy your visit.

Paul Godding       Author, 7puzzleblog.com

 

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 thousands of number challenges we design and post on a daily basis, some of the other educational activities we are involved in are listed here:

  • supporting students with one-to-one, face-to-face maths tuition locally,
  • . . . and one-to-one online math tuition internationally,
  • delivering school-based maths/puzzle workshops all over the UK,
  • designing board games, card games, puzzles & pocket books that are available for schools, parents and the general public to invest in,
  • advising schools on how to improve children’s skills through our games & puzzles in our PuzzleFriday scheme.

Further details of all the above can be found by exploring the various pages of this website. Remember, you are always welcome to contact us on twitter @7puzzle or e-mail paul@7puzzle.com if you have any queries.

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DAY 177:

Today’s Challenge

If you enjoy this, click MATHELONA for further details of our number puzzles.

You must make all three lines work out arithmetically by replacing the 12 ◯’s below with the digits 0, 0, 1, 1, 2, 3, 3, 4, 5, 6, 6 and 7:

◯  +  ◯   =    7    =   ◯  –  ◯
◯  +  ◯   =    5    =   ◯  ×  ◯
◯  +  ◯   =    6    =   ◯  ÷  ◯

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 two numbers have a difference of 21?

Make 177 Challenge

Can you arrive at 177 by inserting 1, 7, 9 and 11 into the gaps below?

◯×(◯+◯)+◯ = 177

Answers can be found here.

Click Paul Godding for details of online math tuition. Wherever you are in the world, please get in touch.

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DAY 176:

Today’s Challenge

Another Kakuro puzzle for anyone who is a beginner to this fantastic little teaser. I guarantee children will enjoy this and their number skills will improve the more puzzles they do. The rules are very simple:

  • Just like a crossword, fill in the boxes,
  • Each box must contain a number from 1-9 and each run of boxes must add up to the total shown on the left or above,
  • You cannot use the same digits in each run, so if a total of 4 is to be completed in 2 boxes, they must be made up of either 3+1 or 1+3, not 2+2.

Here is a Kakuro beginner puzzle to try:

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

Find three pairs of numbers that each have a sum of 42.

Make 176 Challenge

Can you arrive at 176 by inserting 6, 7, 8 and 9 into the gaps below?

(◯+◯+◯)×◯ = 176

Answers can be found here.

Click Paul Godding for details of online math tuition. Wherever you are in the world, please get in touch.

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DAY 175:

Today’s Challenge

Please try this in class if you’re a teacher as I guarantee you will see the children’s number skills grow the more puzzles they attempt. If you’re a puzzle enthusiast, I’m sure you’ll enjoy the challenge too! The rules are very simple:

  • Just like a crossword, fill in the boxes,
  • Each box must contain a number from 1-9 and each run of boxes must add up to the total shown on the left or above,
  • You cannot use the same digits in each run, so if a total of 4 is to be completed in 2 boxes, they must be made up of either 3+1 or 1+3, but not 2+2.

Here is a Kakuro beginner puzzle for you to try:

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 3rd & 5th rows contain the following fourteen numbers:

6    7    13    16    21    25    36    42    45    50    66    80    81    84

What is the sum of the multiples of 3 on the list?

Make 175 Challenge

Can you arrive at 175 by inserting 3, 5, 10 and 15 into the gaps below?

(◯+◯)×◯–◯ = 175

Answers can be found here.

Click Paul Godding for details of online math tuition. Wherever you are in the world, please get in touch.

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DAY 174:

Today’s Challenge

Read the facts below to try and work out which number I am today:

  • I am a 2-digit number,
  • I am a multiple of 7,
  • The difference between my two digits is 4.

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 3rd & 5th rows contain the following fourteen numbers:

6    7    13    16    21    25    36    42    45    50    66    80    81    84

Which number, when 1 is subtracted from it, becomes a square number?

Make 174 Challenges

A double challenge! Can you arrive at 174 on both lines by inserting 9, 10, 16 and 20 exactly once each time?

(◯+◯)×(◯–◯) = 174

◯×◯+◯–◯ = 174

Answers can be found here.

Click Paul Godding for details of online math tuition. Wherever you are in the world, please get in touch.

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DAY 173:

Today’s Challenge

When allocating each letter of the English alphabet a numerical value as follows; A=1 B=2 C=3 … Z=26, the value of the word SUM, for example, would be 19+21+13 = 53.

What would be the value of my popular number puzzle, MATHELONA?

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 3rd & 5th rows contain the following fourteen numbers:

6    7    13    16    21    25    36    42    45    50    66    80    81    84

Find three pairs of numbers that have a sum that is also on the list.

Make 173 Challenge

Can you arrive at 173 by inserting 2, 10, 12 and 14 into the gaps below?

(◯×◯)+(◯÷◯) = 173

Answers can be found here.

Click Paul Godding for details of online math tuition. Wherever you are in the world, please get in touch.

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DAY 172:

Today’s Challenge

You are playing our Mathematically Possible board game and have rolled the numbers 6,  6 and 6 with your three dice.  Using these once each, with + – × and ÷ available, which SIX target numbers from 1-30 is it mathematically possible to achieve?

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 3rd & 5th rows contain the following fourteen numbers:

6    7    13    16    21    25    36    42    45    50    66    80    81    84

What is the sum of the multiples of 7.

Make 172 Challenge

Can you arrive at 172 by inserting 3, 4, 5 and 8 into the gaps below?

(◯+◯×◯)×◯ = 172

Answers can be found here.

Click Paul Godding for details of online math tuition. Wherever you are in the world, please get in touch.

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DAY 171:

Today’s Challenge

You have the same starting number and final answer, both 22.  There are 10 arithmetical steps altogether but the 10th, and final, step is missing.  If this final step involves a whole number, what should it be to arrive at 22?

Start with the number 22, then:

+2     ÷6     ×4     3     ×2     +4     ÷5     +6     ×2     ?     =     22

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 3rd & 5th rows contain the following fourteen numbers:

6    7    13    16    21    25    36    42    45    50    66    80    81    84

List three different numbers that have a sum of 100.

Make 171 Challenge

Can you arrive at 171 by inserting 3, 6, 9 and 9 into the gaps below?

◯×◯×◯+◯ = 171

Answers can be found here.

Click Paul Godding for details of online math tuition. Wherever you are in the world, please get in touch.

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