五年级数学计算题(二):
一、 竖式计算.
1、(除不尽的保留两位小数)
2、(得数保留一位小数)
(1)0.38×0.23 ( 2) 5.79×3.6 (3) 4.6×0.25 (4)6÷24 (5)52.95÷75 (6) 3.01÷7
(7)4.95÷11 (8)84.01÷31(用乘法验算) (9)0.646÷19 (10)4.7×0.59
3、得数用循环小数表示.
(48) (20-0.8×9) × 5.7 (49)0.8×13-3.12+5.28 (50) 118-(11.4-12.5×0.8)
(51)0.27×99+0.27 (52) (0.25+2.5+25)×0.4 (53) 3.5×1.02+35×0.098
(54)50×(6.7×0.02) (55) 2.5×3.2×0.125 (56) 13.5÷2.5÷0.125÷0.4÷8
(69)2.85÷1.25÷0.8 (70)10.5×0.25×12 (71) 3.7×91.6+7.3×91.6-91.6
(75)12.5×0.4×2.5×8 (76)7.75×[20÷(3.24-3.04)] (77)43.2-1.8×3-4.6
(81)4.7×4.7+4.7×6.3-4.7 (82)12.5×3.2×0.25 (83)23.4÷7.2+6.5×0.8
(84)20.64-9.83-0.17 (85)6.8÷(1.2+0.5)×0.04 (86) 7.26-5.4+1.74-1.6
(92)3.2×2.5×1.25 (93) 7.2÷[(7.22-6.4)÷0.9] (94)4.65×32+2.5×46.5+0.465×430
(95)7.25×67.875+725×0.7875+7250×0.053375 (96)0.46×1.9+0.54×1.9
(97) 3.45×102 (98) 12.5× 88 (99) 13.65÷0.25÷6 (100) 28.98÷6.3 -3.15
三、解方程
(101)8x=24 (102)x÷0.5=1.2 (103)x-3.8=9.53 (104)4.06+x=7.11
(105)x÷1.5=1.5 (106) 2.4x=26.4 (10