五年级下册数学计算题精选(二)1、口算题100-0.1= 9.64.8= 31.52= 100.5= 2.40.5=3.25+0.75= 4.60.26 2.050.06 0.6101 20.5-0.5=0.9113 640.36 1.80.60.2 4.263= 2.732.66-4.03= 0.486 15-2.8 4.7+2.19 1.53.06 7.20.18 12.083.346.66 2.321.250.8 2.6519+2.650.12580.1 5+0.4-5+0.4= 6.44 0.8140.814 2、计算:(1)39.4519.350.559.35 (2)39036015660(3)0.48250.3 (4)93.21512.21515 (5) (8.87.72.5)(10.45) (6)8(225.5+4.5)0.17 (7) 4.023.50.98 (8)3.146253.141743.14思考题:1、 11260342567902、1 57921