2018-2019学年度第二学期小学数学四年级小数乘法巧算练习
(1)5.6×7.58-0.56×75.8
(2)0.75×10.5-0.75×0.5
(3)5.5×12.5×0.2×8
(4)4.9×9.9
(5)5.7×8.9
(6)2.95＋3.94＋7.05
(7)4.02＋5.4＋0.98
(8)0.05×2.5×0.2×4
(9)2.5×（4-0.4）
(10)2.8×13.5-2.8×3.5
(11)0.05×4.2×0.2
(12)6.9＋4.8＋3.1
(13)1.2×9.8
(14)65×9.8
(15)0. 5×2.5×0.02×0.4(16)5×1.25×0.02×0.8
(17)1.25×（8-0.4）
(18)17.8×11-17.8
(19)2.4×1.76-0.76×2.4
(20)1.25×3.8×0..08
(21)0.5×6.8×0.02
(22)9.8＋13.7＋10.2
(23)29.7×1.48-9.7×1.48
(24)9.9×2.7
(25)2.22×103-6.66
(26)（0.8-0.08）×12.5
(27)0.25×3.7×0.4
(28)0.25×3.6
(29)3.8＋4.3＋6.2＋5.7
(30)1.25×3.6×0.8
(31)3.5＋13.9＋6.1
(32)0.25×9.5-0.25×5.5
(33)8＋8.63＋5.2＋0.37
(34)0.456＋6.22＋3.78
(35)3.82＋2.9＋0.18＋9.1
(36)25×1.8×0.4
(37)12.5×7.2
(38)3.75+2.69＋1.25
(39)3.6×99+3.6
(40)86.8-(45.96+6.8)
(41)1.25×4.8
(42) 4.7×3.8+0.47×62
(43) 0.28×65-2.8×4.5
(44) 0.125×15-12.5×0.7
(45) 4.8×92+2.4×16