§Ò thi To¸n líp 3
Bµi 1:TÝnh b»ng c¸ch thuËn tiÖn nhÊt:
a.24 x 3 +24 x 2 + 24 x 4 +24
b. 52 - 42 +37 +28 - 38 + 63
Bµi gi¶i:
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Bµi:
Hai b¹n cã 32 qu¶ cam,sè cam cña b¹n Lan b»ng 1 sè cam cña b¹n
Hång.T×m sè cam cña tõng b¹n? 3
Tãm t¾t Bµi gi¶i:
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Bài giải:
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- 2 -
Đề thi Toán lớp 3
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Bài :An có 28 viên bi,Bình có 49 viên bi.Hỏi phải bớt mỗi bạn bao
nhiêu viên bi để số bi của Bình gấp đôi số bi của An?
Bài giải:
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Bµi :TÝnh nhanh:
a) 147 x ( a x 1 - a : 1) x a x 28
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....................................................................................................b )
(485 +3) x 8 x( 2 x12 - 2 x7 x 2 - 5)
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- 4 -
Đề thi Toán lớp 3
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