أسئلة الرياضيات الصف السابع مع الحل

15 سؤالاً تدريبياً في الرياضيات – الصف السابع

1. الفصل: Addition and Subtraction of Integers · سهل

   1. 10 + (−7) = ?

   • A. 17
   • B. -17
   • C. 3
   • D. -3
   أظهر الجواب ▾

   Answer: 3

   Explanation: Different signs: 10 − 7 = 3, sign of the number farther from 0 → 3.

2. الفصل: Addition and Subtraction of Integers · سهل

   2. (−7) − 3 = ?

   • A. 10
   • B. −12
   • C. −4
   • D. −10
   أظهر الجواب ▾

   Answer: −10

   Explanation: Add the opposite: −7 + (−3) = −10.

3. الفصل: Multiplication and Division of Integers · سهل

   3. (−6) × 6 = ?

   • A. −38
   • B. −36
   • C. 0
   • D. 36
   أظهر الجواب ▾

   Answer: −36

   Explanation: Different signs → negative: 6 × 6 = 36 → −36.

4. الفصل: Multiplication and Division of Integers · سهل

   4. (−5) × 10 = ?

   • A. 50
   • B. 5
   • C. −52
   • D. −50
   أظهر الجواب ▾

   Answer: −50

   Explanation: Different signs → negative: 5 × 10 = 50 → −50.

5. الفصل: Geometry: The Essentials to Start · سهل

   5. A circle has radius 12 cm. What is its diameter?

   • A. 144
   • B. 24
   • C. 12
   • D. 48
   أظهر الجواب ▾

   Answer: 24

   Explanation: Diameter = 2 × radius = 24 cm.

6. الفصل: Geometry: The Essentials to Start · سهل

   6. An angle of 151° is:

   • A. straight
   • B. right
   • C. obtuse
   • D. acute
   أظهر الجواب ▾

   Answer: obtuse

   Explanation: Acute < 90°, right = 90°, obtuse between 90° and 180°, straight = 180°.

7. الفصل: Location: Orthogonal System and Coordinates of a Point · سهل

   7. Where is the point (1 ; −8)?

   • A. on neither axis
   • B. at the origin
   • C. on the y-axis
   • D. on the x-axis
   أظهر الجواب ▾

   Answer: on neither axis

   Explanation: y = 0 → x-axis; x = 0 → y-axis; both 0 → origin.

8. الفصل: Location: Orthogonal System and Coordinates of a Point · سهل

   8. Where is the point (0 ; 7)?

   • A. on neither axis
   • B. on the x-axis
   • C. at the origin
   • D. on the y-axis
   أظهر الجواب ▾

   Answer: on the y-axis

   Explanation: y = 0 → x-axis; x = 0 → y-axis; both 0 → origin.

9. الفصل: Statistics: Relative Frequencies, Bar Graph and Frequency Polygon · سهل

   9. Number of children per family: 1 child(ren): 6 families, 2 child(ren): 5 families, 3 child(ren): 5 families, 4 child(ren): 5 families. How many families were surveyed?

   • A. 23
   • B. 20
   • C. 21
   • D. 22
   أظهر الجواب ▾

   Answer: 21

   Explanation: N = 6 + 5 + 5 + 5 = 21.

10. الفصل: Statistics: Relative Frequencies, Bar Graph and Frequency Polygon · سهل

    10. In a class of 80 pupils, the relative frequency of pupils who walk to school is 45 %. How many pupils walk?

    • A. 72
    • B. 44
    • C. 45
    • D. 36
    أظهر الجواب ▾

    Answer: 36

    Explanation: 45 % of 80 = 80 × 45/100 = 36.

11. الفصل: Triangles: Remarkable Lines in a Triangle · سهل

    11. The centre of the circle tangent to the three sides is:

    • A. the centroid G (medians)
    • B. the orthocentre H (altitudes)
    • C. the incentre I (bisectors)
    • D. the circumcentre O (perpendicular bisectors)
    أظهر الجواب ▾

    Answer: the incentre I (bisectors)

    Explanation: Medians → centroid G; altitudes → orthocentre H; perpendicular bisectors → circumcentre O (equidistant from the vertices); bisectors → incentre I (equidistant from the sides).

12. الفصل: Triangles: Remarkable Lines in a Triangle · سهل

    12. The three altitudes of a triangle meet at:

    • A. the orthocentre H (altitudes)
    • B. the incentre I (bisectors)
    • C. the centroid G (medians)
    • D. the circumcentre O (perpendicular bisectors)
    أظهر الجواب ▾

    Answer: the orthocentre H (altitudes)

    Explanation: Medians → centroid G; altitudes → orthocentre H; perpendicular bisectors → circumcentre O (equidistant from the vertices); bisectors → incentre I (equidistant from the sides).

13. الفصل: Powers · سهل

    13. Write 20 000 000 in the form a × 10ⁿ.

    • A. 2 × 10⁸
    • B. 2⁷
    • C. 2 × 10⁶
    • D. 2 × 10⁷
    أظهر الجواب ▾

    Answer: 2 × 10⁷

    Explanation: 20 000 000 = 2 followed by 7 zeros = 2 × 10⁷.

14. الفصل: Powers · سهل

    14. Write 3 000 in the form a × 10ⁿ.

    • A. 3 × 10²
    • B. 3 × 10³
    • C. 3³
    • D. 3 × 10⁴
    أظهر الجواب ▾

    Answer: 3 × 10³

    Explanation: 3 000 = 3 followed by 3 zeros = 3 × 10³.

15. الفصل: Prime Numbers · سهل

    15. 28 is a prime number.

    • A. True
    • B. False
    أظهر الجواب ▾

    Answer: False

    Explanation: 28 = 2² × 7 → composite.

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