{"id":1818,"date":"2017-02-22T12:51:36","date_gmt":"2017-02-22T11:51:36","guid":{"rendered":"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/semaine-des-maths\/?p=1818"},"modified":"2017-03-04T23:56:29","modified_gmt":"2017-03-04T22:56:29","slug":"enigmes-cycle-3-4","status":"publish","type":"post","link":"https:\/\/ent2d.ac-bordeaux.fr\/disciplines\/semaine-des-maths\/2017\/02\/22\/enigmes-cycle-3-4\/","title":{"rendered":"\u00c9nigmes plurilingues cycle 3 et 4"},"content":{"rendered":"

Voici\u00a0une s\u00e9rie d\u00b4\u00e9nigmes pour les cycle 3 et 4, d\u00e9clin\u00e9es en allemand, en anglais, en espagnol ou en fran\u00e7ais, s\u00e9lectionn\u00e9es et r\u00e9dig\u00e9es par des \u00e9l\u00e8ves\u00a0de lyc\u00e9es de l’acad\u00e9mie de Bordeaux.<\/p>\n

\u00c9nigme 1<\/span>, d’apr\u00e8s<\/em> Math\u00e9matiques Sans Fronti\u00e8res Junior<\/em><\/h2>\n\n\n\n
Leckerbissen:<\/strong> Robert spielt mit einer Waage, die 2 Waagschalen hat. In diesen 2 Situationen ist sein Waage im Gleichgewicht.<\/p>\n

Wie viele Lutscher muss er auf die rechte Waagschale legen, damit die Waage im Gleichgewicht ist\u00a0?<\/strong><\/td>\n

Sweets:<\/strong> Robert is playing with a balance scale. In the two following situations the scale is balanced.<\/p>\n

How many lollipops should he put on the right pan to achieve equilibrium?<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\"\"\"\"\"\"<\/p>\n

\"\"<\/p>\n

\u00c9nigme 2<\/span>, d’apr\u00e8s<\/em> Math\u00e9matiques Sans Fronti\u00e8res Junior<\/em>.<\/h2>\n

Verr\u00fcckt nach Reis:\u00a0<\/u><\/strong>Marco legt Reisk\u00f6rner auf ein Schachbrett. Er legt Reiskorn auf das erste Feld, 2 Reisk\u00f6rner auf das zweite, 4 Reisk\u00f6rner auf das dritte. So verdoppelt er jedes Mal die Anzhal der Reisk\u00f6rner von dem einen Feld auf das n\u00e4chste.<\/p>\n

Auf dem wievielten Feld legt Marco das 1000. Reiskorn?<\/strong><\/p>\n

Mad about rice:\u00a0<\/u><\/strong>Marco is placing grains of rice on a chessboard.
\nHe puts 1 grain of rice on the first square, 2 on the second one, 4 on the third one. By doing this he doubles each time the number of grains from one square to the next one.\u00a0Which square will Marco place the 1000th grain on?<\/strong><\/p>\n

\u00c9nigme 3<\/span><\/h2>\n

Two Santa Clause goblins need one hour and 30 minutes to wrap eighteen Christmas presents.
\nSanta Claus knows that he must bring 99 presents for the trip which starts in 90 min.
\nHow many goblins should be wrapping to leave on time?<\/strong><\/p>\n

\u00c9nigme 4<\/span><\/h2>\n

A snail is at the bottom of a well of 10m.\u00a0Every morning, it ascends 3m and every night it goes down 2m.
\nHow many days will it <\/strong>take<\/strong> to get out of the well?<\/strong><\/p>\n

\u00c9nigme 5<\/span><\/h2>\n

There are several books on a bookshelf. If one book is the 4th<\/sup> from the left and 6th<\/sup> from the right, how many books are on the shelf?<\/p>\n

\u00c9nigme 6 <\/span>:\u00a0Mystery<\/h2>\n

In a race of roman chariots,
\nAll the chariots are blue except two,
\nAll the chariots are red except two,
\nAll the chariots are green except two.<\/p>\n

How many chariots are there?<\/strong><\/p>\n

\"\"<\/p>\n

\u00c9nigme 7 <\/span>:\u00a0Oca corral
\n<\/strong><\/h2>\n

En un corral del Norte de Espa\u00f1a, se puede encontrar ocas blancas y cerdos. Sabemos que hay 200 patas y 72 cabezas. \u00bfCu\u00e1ntas orejas de cerdos podemos contar?<\/p>\n

\u00c9nigme 8<\/span>:\u00a0Combinaci\u00f3n<\/h2>\n

Buscamos un n\u00famero de 6 d\u00edgitos que incluye:<\/p>\n