# Joint math homework in fifth grade (5ème).

A joint math assignment in seventh grade is always a way for students to explain themselves to each other and to fill in some of the gaps in their math skills. This shared math assignment will help you develop skills.

### Exercise 1:

Calculate the mathematical expressions A, B, and C by detailing the calculations.

A = 10 – 4 + 2 B = 15 + 2 × 5 C = 10 × [ 5 + 4 ÷ (10-8) ]

### Exercise 2: ‘maths homework’.

This exercise is a multiple choice questionnaire (M.C.Q.).

No justification is required.

For each question, three answers are proposed. Only one is accurate.

For each question, indicate on the copy the number of the question and copy the correct answer.

 Answer A Answer B Answer C Answer D N°1 I have a rectangle ABCD with AB = 12 cm and BC = 6cm. What is its scope? 36 cm 36 cm². 72 cm². 72 cm N°2 AB = 8.4 cm AC = 3.4 cm BC = 7 cm The point C belongs to the segment [AB] The figure is impossible The triangle ABC is constructible The point A belongs to the segment [BC] N°3 A department store receives its delivery of fruit juice, 18 boxes of 12 bottles. It remains in reserve 102 bottles. How many bottles of juice are there now in this department store? (12+102)x18 (18+102)÷12 102+12×18 (18+102)x12 N° 4 What is the line that passes through a vertex and is perpendicular to the opposite side? The parallel The median The mediator The height

### Exercise 3:

Arrange the following numbers in ascending order: ### Exercise 4: ‘Maths group homework’.

1. Place on a graduated line with origin O the points A, B and C of respective abscissas -4 ; -2 ; + 3.

2. Leo looks at the right and says:

“With another origin O’, the points have abscissas: A(-1); B (+ 1); C(+ 6)”.

Place in blue on the graduated line this point O’.

### Exercise 5:

The figure below was drawn using geogebra software.

On the copy, construct this figure in full size, the unit of length being the centimeter.

(Leave the construction lines visible)
. ### Exercise 6: ‘Maths group homework’.

We know that:

• E is the middle of [CB]
• CD = 3 cm
• AB = 6 cm
• (CD) is perpendicular to (AB) 1. Calculate the area of ABC

2. Calculate the area of the triangle CAE. Justify the calculation.

### Exercise 7:

1. Construct, below, the point E’ symmetrical to point E with respect to D.

2. Construct, below, the triangle A’B’C’ symmetrical to ABC about D.

Leave the construction lines visible
.

3. Show that the lines (AB) and (A’B’) are parallel. Télécharger puis imprimer cette fiche en PDF

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