一、直接写出得数。
100÷0.8 = 3.2 + 1 = 24×0.8 =
3.6÷0.72 = 5.6 - 2.3 = 7.13 - 0.3 =
4.5 + 0.55 = 350÷0.7 = 1.1 + 3.9 =
0.125×6 = 8.4×5 = 6.02 - 5.94 =
19×0.8 = 3.2 + 1.68 = 1.5÷0.75 =
3 - 0.27 = 4÷16 = 5×0.42 =
8 - 5.6 = 0.9×11 = 2.6÷1.3 =
100÷0.8 = 3.2 + 1 = 24×0.8 =
3.6÷0.72 = 5.6 - 2.3 = 7.13 - 0.3 =
4.5 + 0.55 = 350÷0.7 = 1.1 + 3.9 =
0.125×6 = 8.4×5 = 6.02 - 5.94 =
19×0.8 = 3.2 + 1.68 = 1.5÷0.75 =
3 - 0.27 = 4÷16 = 5×0.42 =
8 - 5.6 = 0.9×11 = 2.6÷1.3 =
答案:
125 4.2 19.2
5 3.3 6.83
5.05 500 5
0.75 42 0.08
15.2 4.88 2
2.73 0.25 2.1
2.4 9.9 2
二、用点在直线上表示下面各数并填空。

最小刻度表示$\frac{(\ \ \ \ \ )}{(\ \ \ \ \ )}$,它是$\frac{(\ \ \ \ \ )}{(\ \ \ \ \ )}$和$\frac{(\ \ \ \ \ )}{(\ \ \ \ \ )}$的分数单位。
最小刻度表示$\frac{(\ \ \ \ \ )}{(\ \ \ \ \ )}$,它是$\frac{(\ \ \ \ \ )}{(\ \ \ \ \ )}$和$\frac{(\ \ \ \ \ )}{(\ \ \ \ \ )}$的分数单位。
答案:
$\frac{1}{12}$ $\frac{7}{12}$ $\frac{11}{12}$
三、计算下面各题,能简算的要简算。
8.75 - (4.75 + 2.36) 0.8×3.27×7.5 3.76×0.25 + 25.8
0.89×10.1 5.4×[2.58÷(2.32 - 1.03)] 0.4×2.5÷2.5×0.4
8.75 - (4.75 + 2.36) 0.8×3.27×7.5 3.76×0.25 + 25.8
0.89×10.1 5.4×[2.58÷(2.32 - 1.03)] 0.4×2.5÷2.5×0.4
答案:
1.64 19.62 26.74
8.989 10.8 0.16
查看更多完整答案,请扫码查看