Math Test For 8 Grade The test is according to the Bulgarian educational system. 1. Evaluate the expression 15.987 + 82.713 94.693 98.700 89.040 97.713 2. The difference 9 - 9/10 is: 8 9 10 0 9 9 10 8 1 10 3. Evaluate the expression 5.10^{4} + 4.10^{3} + 7.10 + 1 5471 54071 54701 50471 4. The number 3.45 is equal to: 3 9 20 345 10 34 1 2 34 5 10 5. Evaluate the expression -2^{5}⋅6^{3} (-2)^{7}⋅(-3)^{2} 6 -6 8 -8 6. 60% from 60 is: 3.6 60 3/5 36 6 7. The multiplication of 2xy^{2}⋅(-3x^{2}y) is equal to: 6x^{3}y^{2} -x^{2}y -xy -6x^{3}y^{3} 8. 3x^{2} - 3x(x - 1) - x(3 - x) is equal to: x^{2} - 6x x^{2} -x^{2} -x^{2} - 6x 9. When you remove the brackets (1 + 2a)^{3} you will get: 1 + 2a + 4a^{2} + 8a^{3} 1 + 6a + 12a^{2} + 8a^{3} 1 + 6a + 6a^{2} + 8a^{3} 1 + 6a + 6a^{2} + 2a^{3} 10. The biggest number that is a decision of 3(2 + x) ≥ 2(3x + 4) is: -1 0 1 there is not such a decision 11. A car consumption is 7.5 litres per 100 km. If the petrol tank of the car can hold 42 litres how many km the car can go? 315 km. 600 km. 560 km. 178 km. 12. If the expense for producing a goods is $68, what will be the price so the profit of the producer to be 15% from the price: $78.20 $80 $83 $125.80 13. Every side of a square with surface 36 cm^{2} is separated on 3 equal parts. From the square are removed the black parts. What is the surface of the white part? 20 cm^{2} 16 cm^{2} 8 cm^{2} 28 cm^{2} 14. How many square cm is the surface of a rhombus with diagonals 5 cm. and 8 cm? 10 cm^{2} 20 cm^{2} 30 cm^{2} 40 cm^{2} 15. Angle α is equal to: 40° 60° 80° 100° 16. The line that cross AC(in point M) and BC is perpendicular to BC and cross BC in the mid point If the angle BAC = 70°, then the angle ABM = ? 80° 70° 60° 50° 17. In the diagram ABCD is a parallelogram and AB=BM=MC. What is the measure of AMD ? 90° 60° 120° 100° 18. In the diagram ABCD is a parallelogram. If CD = 7 cm. what is the length of AM ? 7 cm 3.5 cm 14 cm 10.5 cm 19. In the triangle ABC the height CH = 1.5 cm., the angle ACB = 90° and ABC = 75°. What is the measure of AB ? 3 cm 4,5 cm 6 cm 9 cm 20. ABCD is a square and MB = CN, the angle NBC = 35°. What is the measure of AMB: 55° 60° 65° 70°