Kì thi chọn học sinh giỏi cấp Thành phố - Môn thi: Giải Toán trên máy tính Casio - Năm học 2005-2006 - Phòng GD Hạ Long

Phòng Giáo dục Hạ Long Thi chọn học sinh giỏi cấp thành phố
 ----------------------------- Năm học 2005-2006
 ------------------------
Chữ ký giám thị
1: ...................
2: ...................
Môn thi : Giải Toán trên máy tính CASIO
 Ngày thi : 11/12/2004
Thời gian làm bài : 150 phút ( không kể thời gian giao đề )
Số phách
Họ và tên thí sinh : ................................................................
Ngày sinh : ................................. Số báo danh : ...................
Nơi sinh : ..............................................................................
Học sinh trường : ..................................................................
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Số phách
Điểm bài thi : Bằng số :................. ( Bằng chữ : ....................................................)
Chữ ký của hai người chấm thi : : 1: .................................... 2 : ...............................
* Qui định:
 - Thí sinh làm bài ngay vào đề thi này . Đề thi gồm 02 tờ . ( Tờ số 1 )
 - Bài thi không được viết bằng mực đỏ, bút chì; Không viết bằng hai thứ mực; Phần viết hỏng, 
 ngoài cách dùng thước để gạch chéo, không được tẩy xóa bằng bất cứ cách gì kể cả bút xóa .
 - Các bài ở những bước dùng máy tính để tìm kết quả phải viết qui trình bấm phím và nói rõ dùng 
 máy Casio nào .
 - Thí sinh chỉ được dùng máy tính Casio : fx - 500A ; fx - 500 MS ; fx - 570 MS .
 - Nếu không nói gì thêm, hãy tính chính xác đến 6 chữ số .
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Bài 1 :
Tính :
A =
= 
A = ( 649+ 13 . 180) - 13 . ( 2 . 649 . 180) 
B =
B = 
C =
C = 
Bài 2 : 
Cho dãy số : U = với 
1) Tính 5 số hạng đầu tiên của dãy này .
2) Lập một công thức truy hồi để tính U theo U và U .
3) Viết qui trình bấm phím liên tục để tính U trên máy tính Casio .
Bài làm : 
U = 
U = 
	1) 
 Không viết vào phần
 gạch chéo này
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U= 
U = 
U= 
2)..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
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.................................................................................................................................................................................................................................................................................................................................................... ....................................................................................................................................................................................................................................................................................................................................................3)......................................................................................................................................................................
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Bài 3 :
	Cho tam giác ABC vuông tại A, đường cao AH . Biết AB = 0,7 ; BC = 1,6 .
	Tính : AC ; AH ; BH ; CH .
Bài làm : 
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Bài 7 : 
	Để làm xong một công việc, người thứ nhất làm một mình hết 3 giờ 20 phút, người thứ hai làm một mình hết 4 giờ 15 phút . Hỏi hai người làm chung thì mất mấy giờ để làm xong công việc đó ?
Bài làm : 
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Bài 8 : 
	Chữ số thập phân thứ 2005 sau dấu phẩy là chữ số nào khi ta chia 1 cho 23 ?
Bài làm : 
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Bài 9 : 
	Giải hệ phương trình :
Bài làm : 
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Bài 10 : 
	Cho và 
Tính : ; ; .
Bài làm : 
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