Enigmes mathématiques

 Key vocabulary for solving riddles:
To solve the riddles, you need to know some essential words and expressions that are used to describe numbers in French. Here are the most important ones:

1. Basic maths operations:
addition (plus): plus = plus
Example: Cinq plus cinq égale dix = Five plus five equals ten.

subtraction (minus): moins = minus
Example: Dix moins trois égale sept = Ten minus three equals seven.

multiplication (fois): fois = times / multiplié par = multiplied by
Example: Deux fois trois égale six = Two times three equals six.

division (divisé par): divisé par = divided by
Example: Huit divisé par deux égale quatre = Eight divided by two equals four.

half: moitié = half of
Example: La moitié de dix est cinq = Half of ten is five.

double: double = double of
Example: Le double de dix est vingt = Double of ten is twenty.

2. Comparing numbers:
more than: plus que = more than
Example: Cinq est plus que trois = Five is more than three.

less than: moins que = less than
Example: Six est moins que huit = Six is less than eight.

between: entre = between
Example: Je suis entre cinq et sept = I am between five and seven.

3. Other useful terms:
the sum of: la somme de = the sum of
Example: La somme de cinq et dix est quinze = The sum of five and ten is fifteen.

the product of: le produit de = the product of
Example: Le produit de deux et cinq est dix = The product of two and five is ten.

How to solve the riddles:
Follow these steps to solve a number riddle in French:

1. Read the riddle carefully
In each riddle, a number is described using words in French. Take your time to read the description. Look for key words that tell you what math operation to do (e.g., plus que = more than, moitié = half, fois = times).

2. Understand the key words:
Make sure you understand what each word means. If you don't understand a term (e.g., divisé par = divided by or double = double), look it up or ask for help before continuing.

3. Do the calculation mentally or on paper:
Once you understand the riddle, perform the operation indicated. This could be addition, subtraction, multiplication, division, or comparison.

4. Write the answer in digits:
The answer should be written as numbers (unless the riddle specifically asks you to write it in words).

Practical Tips
Reread the riddle multiple times to make sure you understand all the terms.

Practice basic math operations in French regularly.

Use an online dictionary or ask someone to explain the words you don't understand.

(!) Answers should be written in numbers (not in words). All the answers are explained.

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