1、沪教版四年级(上)小升初题单元试卷:第 3 单元(04)一、填空题(共 2 小题)1a、b 都是质数, + 的分子是 30,那么 a、b 可能是_和_2一个分数,若加上它的一个分数单位,和是 1,若减去它的一个分数单位,差是 ,这个分数是_21 世纪教育网版权所有二、解答题(共 13 小题)3直接写出得数2.54= 0.40.2= 80.8= 0.240.6= 560165= = 6 = = 1.75(0.75 + )=4直接写出得数2.541.42= 3.05+2.83= 32= 18.66= = = = 3010%=5直接写出得数:2.25=1.80.05= = 4.21100%= = 0
2、.22= = =6直接写出得数0.42= 0.37+2.73= 3.670%=+= 2= =7口算+ = 15%= 3450= =0.40.8= 12=1.258= 2.4 =8口算0.40.2= 90.09= 7.20.04= 3.5%10=+ = = 3 = 10.6=9直接写得数+ = =50.5= 99%+0.1%= 8=18= 0.03+0.97= 0.210= 4 4= + =10直接写得数568198= 3.8+6.2= 4.82= 0.651.3=245= = + = 1 =48( )= 2=11直接写出得数 = 55 = 0.40.2= 3.4 = 7 7=+6.25=3.2
3、0.8= = 6.31%= 15+58=12直接写出得数0.1258= 10 = = 8.4+ =10.37= 0 =+ = 3.14200=2 2=5.021015.02=13直接填得数480=_ 0.258=_ 3030%=_ 0.30.3=_71.4=_ =_ 12 =_ 56=_ =_ + =_14直接写出结果5.4+3 = 0.5 = =5 3.5= 12( + )= 17.325.664.34=4 +2.25+5 +7 = 14 (4 3 )= 2.941.25+70.60.125=20062006=15直接写得数:= = = 1.258=2 = 0.151.2+3.815%= 0.25+0.75= =( ) =45055= 24.38.870.13=