Tài liệu Tiểu học lớp 2 tài liệu mới nhất cac de luyen thi (3)

ÔN LUYÊN CUỐI NĂM Dang 1: Thưc hiên phép tính Bài 1: Đăt tính rồi tính: a) 213 – 9 ; b) 326 + 19 ; c) 400 – 25 ; d) 128 + 39 ..................... ........................ ......................... ........................ ..................... ........................ ......................... ........................ ..................... ........................ ......................... ........................ e) 23 + 46 ; f) 67 – 19 ; g) 36 + 24 ; h) 100 – 34 ..................... ........................ ......................... ........................ ..................... ........................ ......................... ........................ ..................... ........................ ......................... ........................ Bài 2: Tính (theo mẫu): Mẫu: 2 x 6 – 12 = 12 – 12 = 0 a) 300 – 5 x 7 = .................................................................................................................................................................... b) 3 x 9 + 29 = ..................................................................................................................................................................... c) 20 : 5 – 2 = ...................................................................................................................................................................... d) 123 + 40 : 5 = .................................................................................................................................................................. e) (276 – 76) + 100 = ...................................................................................................................................................... f) 35 : 5 – 4 = ............................................................................................................................................................................ g) 100 + (23 – 19) = ........................................................................................................................................................... h) 427 – (124 + 139) = .................................................................................................................................................... Bài 3: Tính nhanh (theo mẫu): Mẫu 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 = (1+9)+(2+8)+(3+7)+(4+6)+5 = 10 + 10 + 10 + 10 + 5 = 40 + 5 = 45 a) 10 + 11 + 12 + 13 + 17 + 18 + 19 + 20 ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... b) 50 – 49 – 48 – 47 – 46 – 36 – 37 – 38 – 39 – 40 ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... c) (200 – 199 – 198 – 197 – 97 – 98 – 99 – 100) + 36 ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... Dang 2: Tìm x Bài 1: Tìm x, biết: a) x + 23 = 100 ; b) 145 – x = 387 ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... c) x x 5 = 35 ; d) 45 : x = 9 ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... e) 23 + x = 100 – 34 ; f) x – (213 – 13) = 400 ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... g) x x 3 = 40 – 13 ; h) 50 : x = 10 x (100 – 95) ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... Dang 3: Bài toán có lời văn Bài 1: Nhà An có 134 con cả gà và thỏ, trong đó 123 con gà. Hỏi: a) Nhà An có bao nhiêu con thỏ ? b) Số con gà hơn số con thỏ bao nhiêu con ? 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Bài 2: Môt cửa hàng, ngày thứ nhất bán 54l nước mắm; ngày thứ hai bán nhiều hơn ngày thứ nhất 29l. Hỏi cả hai ngày bán bao nhiêu lít mắm ? 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Bài 3: Trường TH Trần Quốc Toản có 546 hoc sinh, năm hoc vừa đây có thêm 39 hoc sinh chuyển vào. Hỏi trường TH Trần Quốc Toản có bao nhiêu hoc sinh ? Bài giải ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... Bài 4: a) Mỗi con bò có 4 chân, Chi đếm thấy 7 con bò. Hỏi có bao nhiêu cái chân ? b) Có 6 con gà, 3 con mèo. Hỏi: - Có bao nhiêu con cả gà và mèo ? - Có bao nhiêu cái chân ? Bài giải ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ........................................................................................................................................................................................................................ ........................................................................................................................................................................................................................ . ........................................................................................................................................................................................................................ . Bài 5: Tìm 1 số biết rằng lấy số đó trừ cho 12 rồi công với 129, kết quả bằng 200. 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