五年级数学第五周计算题
班别： 姓名：
一、口算。
0.24＋6.9 = 9.1－7.3 = 1.2×6 = 31×3 = 24×5 = 1000÷8 = 1.25×4 = 300÷50 = 480÷0.6 = 3.4×0.7= 2.2×3 = 0.2×1.1 = 1.4 ÷0.2= 0.08×0.5= 53 = 二、下面各题,怎样简便就怎样算。
2.15+8.73+1.27+7.85 11.87-(8.2+1.87) 4.38－1.56+0.62－0.44 0.4×270×2.5 （12.5－0.05）×8 2.6×8.5+8.5×7.4 7.2＋2.8=
0.8×0.6 =
0.15×9=
2.1÷0.3=
82 = 5.42-3.87-1.13 （40+1.25）×8 9.9×6.9－6.9×3.9
5.6×99+5.6 2.5×(1.9＋1.9＋1.9＋1.9) 7.2÷1.25÷8
二、用竖式计算
1.8÷0.02= 0.72÷0.9= 0.2÷0.01= 0.25×40= 1.25×0.8= 5.5×66= 7.8×0.35= 三、解方程练习题。4(x-5.6)=1.6 5.76×3＝ 2.08×7.5= 90.75÷3.3 1.05×2.4= 1.÷0.54= 3.7×0.016 5.61÷6.1= 5.2×0.6= 6.21÷0.3= 6.4×0.5= 1.3÷0.9= 5.25×5= 21.84÷0.7 18(x-2)=270 0.43×0.28= 4.6×0.6=
3.08×0.43=
5.22÷29=
13.95÷3.1= 5.93×0.76
8.4×0.25=
x-0.8x=6
16.9÷0.13
12x-8x=4.8 x-0.7x=3.6 53x-90=16
3x－8＝16 7x+5.3=7.4 30÷x+25=85
8-2x=6 6x-12.8×3=0.06 3(x+0.5)=21
5×3-x÷2=8 x÷0.756=90 x÷5+9=21 10.5+x+21=56 x+2x+18=78 (x-140)÷70=4 5x+5=15 x-9=80 55x-25x=60 36÷ x=18 四、计算下面图形的体积和表面积。（单位：cm）
78y+2y=160
88-x=80
25-5x=15
100-20x=20
4x-20=0