实小小学五年级上册数学计算比赛试卷(5)

小学五年级上册数学计算比赛试卷(5)

班级__________ 姓名__________ 成绩___________

一、直接写出得数

0.5×8= 3.6×0.4= 39.68×0= 47.6×1= 4÷0.5= 12÷0.06= 12÷1.2= 3÷30=

0.15×7= 3.2×6+3.2×4= 2.5×4×0.36= 0.2+0.8×0.5= 6.03×1000= 10×0.6= 6.45×0.01= 80×0.3= 0.1×0.1= 0.24×0.5= 5.4＋3.6= 1.25－0.25= 10.2×4.5＝ 2.5×6＝ 9×0.25＝ 0.125×4= 1.25×8×0.5= 16×0.01= 1.68÷0.3= 0.27÷0.003= 0.01÷0.1= 1.8×20= x-0.4x= 5d-2d= 3.6÷0.4= 0.6×0.8＝ 2.4×3＝ 0.12×0.7＝ 4÷5＝ 1.6÷0.5＝ 0.2÷0.05＝ 2.5×2.3×4= 0.6×0.8= 3×0.9= 0.5×4÷0.5×4= 38.5×0×0.38= 2.5×0.4= 3.6×0.4= 12.5×8= 50×0.04= 1.5÷1.5＋1.5= 3.6－1.2÷2.4= 4.7×6＋4×4.7= 二、用竖式计算(第5题保留两位小数)

8.08－2.68＝ 5.546＋29.38＝ 7.04×0.26 ＝

8.35×3.5＝ 4.58×0.37≈ 10.1÷3.3=

1

三、脱式计算

（2.65+2.77）÷（1.98-0.98） 3.7×91.6+6.3×91.6

0.45×12×0.2 6.2×2.1－2.1 2.8－2.8×0.15

16.84÷40÷0.25 12.5

4.2×7.8+2.2×4.2 2.55

5.12＋2.54＋4.88 12.5 四、解方程

4(x+0.3)=4.8 1.2x-0.8x=9.6 20+x=36

7x-55=50 0.7x=4.2

×0.4×2.5×8 9.5×101

×7.1+2.45×7.1

×17.8×0.8 9.9×2.5

（10-7.5）x=1 2