Math for grade 7 Quiz

Question Number 1 A triangle's vertex are A, B and C. A is 60-x degree, B is 67-x degree and C is 18 degree. How much is the X? A. 51 B. -51 C. 2/10 D. 5,1 Question Number 2 Change it to degree, minute and second! 98,45 degree. A. 98 degree, 4 minutes and 30 seconds B. 98 degrees, 4 minutes and 30 seconds C. 98 degres, 4 minutes and 30 seconds D. 98 degrees, 4 minute and 30 second Question Number 3 3a + 2b - c plus with 2a - 3b - 3c ! A. a + (-b) -4c B. a + b - 4c C. 5a - b -4c D. a, b and c are correct Question Number 4 The simple one of 5ab(a2 - 2ab - b2) - 3b(a3 - a2b + ab2) is ... A. 2a3b - 7a2b2 - 8ab3 B. 2a3b - 7a2b2 - 2ab3 C. 2a3b - 13a2b2 - 8ab3 D. 2a3b - 13a2b2 - 2ab3 Question Number 5 In a family, a man ha boy has brothers same like sisters, and a girl has sistees as 2/3 from her brothers. The children at that family are ... A. 12 children B. 11 children C. 10 children D. 9 children Question Number 6 From 4 group of number down, which one that is the triple of phytagoras? A. 9, 12 and 15 B. 7, 12 and 13 C. 11, 24 and 25 D. 8, 15 and 16 Question Number 7 A seller is buying 60 eggs, then the eggs are sold by the seller wit the price $48. If from the selling result suddenly received lucky price $0.015 each egg, explain the buy's price all! A. $37 B. $38 C. $39 D. $40 Question Number 8 A rectangle has length 6 cm ang width 4 cm. Explain the comparison of the length and the circumference! A. 3 : 10 B. 3 : 13 C. 1 : 3,3 D. 2 : 6,6 Question Number 9 n(A) = 25, n(B) = 18 and n(A *sliced* B) = 15. Explain n(A *combine* B)! A. 27 B. 28 C. 29 D. 30 Question Number 10 Determine the result of the third powers of 0,13! A. 0,002179 B. 0,002917 C. 0,0002197 D. 0,002197