Phòng GD§ĐT Như Thanh
Trường THCS Thanh Kỳ
KIỂM TRA CHƯƠNG IV
Môn : Số học 6
Họ và tên :……………………………… ; Lớp : …………
Điểm
Lời phê của thầy giáo
ĐỀ BÀI & BÀI LÀM :
Câu 1: ( 2 điểm)
A = { x ∈ N /15 ≤ x ≤ 17}
a) Viết các tập hợp A bằng cách liệt kê các phần tử:
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b) Viết ba số tự nhiên liên tiếp trong đó số bé nhất là 30.
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Câu 2: (4 điểm) Thực hiện phép tính ( Tính nhanh nếu có thể )
56 + 225 + 44
a)
b) 5.49.4.2.25
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{ 188 − 33 + ( 20 − 5) } : 70
c) 45.37 + 93.45 + 55.61 + 69.55
d)
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Câu 3: (3 điểm) Tìm số tự nhiên x, biết rằng:
44 + ( 16 − x ) = 50
a)
b) 585 – (7x + 60) = 455
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Câu 4. (1 điểm) Tính tổng sau:
S = 1+ 8 + 15 + 22 + 29 + ... + 407 + 414
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