五年级奥数专题简便运算

(2)0.125×0.25×0.5×64

(3)3.75×4.8＋62.5×0.48

(4)1.56×1.7＋0.44×1.7－0.7 (5)11.72－7.85－(2.26＋0.46)

(6)0.1＋0.3＋0.5＋0.7＋…＋0.97＋0.99 (7)5.5×17.3＋6.7×5.5 (8)13.7×0.25×8

(9)32.8＋5.6＋7.2 (10)4.6×2.5×40

(11)12.5×3×3×8 (12)50×0.47×0.2

(13)101×7.7 (14)10.1×54

(15)42.6－2.77－7.23 (16)16.4－16.4×0.5

(17)2.18＋4.65＋7.82＋4.35 (18)12.48－2.72－3.28 (19)(250

＋

2.5)

×

4

(20)4×7×0.5×3×5

(21)(125＋1.25)×8 (22)775＋10.9＋9.1＋225

(23)(0.45＋0.06＋1.5)÷0.15

(24)2.75÷54＋2. 65÷54

(25)1.25×8.8

(26)0.89×10.1

(27)25×5.26×40 (28)0.125×32×25

(29)0.36×0.5＋0.36×0.4＋0.36×0.1 (30)0.38＋13.4＋1.62＋4.6

(31)0.125×78×80 (32)9.1×1.1－9.1×0.1

(33)0.125×32×25×58 (34)7×1.785＋3×1.785

(35)5.25÷15＋3.75÷15 (36)18.4×1.7＋18.4×8.3

(37)7.6×5.3＋7.6×3.7＋7.6 (38)45.6÷38－7.6÷38

(39)9999×2222＋3333×3334

(40)2999+999×999 (41)88.8×8.7+11.2×9.9－11.2×1.2 (42)22.05×8.2－20.05×4.5－20.05×3.7 (43)1972×37+197.2×1.9－986×70.38

(44)0.525÷13.125÷4×85.85÷1.01

(45)4.83×0.59+0.41×1.59－0.324×5.9

(46)2.19+6.48+0.51－1.38－5.48－0.62

(47)(1+0.12+0.23)×(0.12+0.23+0.34)－(1+0.12+0.23+0.34)×(0.12+0.23)

(48)9999×8+1111×28

(49)77×13+255×999+510

(50)53×46+71×54+82×54