8.直接写得数.
25×80= | 0.56+5.6= | 0÷123= | 720÷8= |
1-$\frac{3}{8}$= | $\frac{2}{7}$+$\frac{4}{7}$= | $\frac{8}{10}$-$\frac{5}{10}$= | 15.2-4.4= |
7.学校足球场是长方形的,长100米,宽75米.洋洋沿着足球场跑了2 圈,一共跑了( )米.
A. | 100×2+75×2 | B. | (100+75)×2 | C. | (100+75)×2×2 |
2.直接写出下面各题的得数.
0 157757 157765 157771 157775 157781 157783 157787 157793 157795 157801 157807 157811 157813 157817 157823 157825 157831 157835 157837 157841 157843 157847 157849 157851 157852 157853 157855 157856 157857 157859 157861 157865 157867 157871 157873 157877 157883 157885 157891 157895 157897 157901 157907 157913 157915 157921 157925 157927 157933 157937 157943 157951 199269
6×30= | 60×3= | 6×300= | 60×30= |
40×20= | 20×50= | 500×9= | 200÷5= |
30×700= | 90×400= | 400×8= | 300×3= |