Đề thi chọn học sinh giỏi lần 1 Toán Lớp 2 - Năm học 2012-2013

Điểm
ĐỀ THI CHỌN HỌC SINH GIỎI NĂM HỌC 2012 -2013
Mụn: Toỏn lớp 2 – Lần 1
( Thời gian: 60 phỳt )
Họ và tờn: Lớp:.
Phần I: Viết kết quả đỳng cho cỏc bài toỏn sau:
Câu 1: Tìm x biết :
a, 10 + x < 12 b, 3 < x < 3 + 5
Cõu 2: Cú 9 lớt nước mắm đem đựng vào hai loại chai 2 lớt và 3 lớt. Hỏi cú bao nhiờu chai mỗi loại?
Phần II: Em hóy trỡnh bày cỏc bài toỏn sau:
Cõu 3: Tỡm x:
 a, x + 123 = 583 + 15 b, 4 x 2 x x = 40
Câu 4 : Tỡm tổng, hiệu, tớch, thương của số chẵn lớn nhất cú 2 chữ số và số liền sau của số lẻ nhỏ nhất cú 1 chữ số? 
Cõu 5 : Tính nhanh
 16 + 12 + 15 + 14 + 11 - 1 - 6 - 5 - 4 - 2
Câu 6 : Một của hàng sau khi bỏn đi 247 kg gạo thỡ cũn lại 389kg.
 a, Hỏi lỳc đầu cửa hàng cú bao nhiờu ki – lụ – gam gao?
 b, Sau khi bỏn của hàng lại nhập thờm về một số gạo đỳng bằng số gạo cũn lại trong kho. Hỏi khi đú cửa hàng cú bao nhiờu ki – lụ – gam gạo?
Cõu 7: Hình bên có bao nhiờu hình tứ giác?
Kể tên các hình tứ giác đó ?
Bài làm
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