16.如图的正方形和平行四边形的面积比较( )
A. | 正方形面积大 | B. | 一样大 | ||
C. | 平行四边形面积大 | D. | 无法比较 |
15.下面各式中,是方程的是( )
A. | 5×7=35 | B. | x+7 | C. | 3×2+x=32 | D. | x+y |
14.根据26×73=1898,下列算式正确的是( )
0 157793 157801 157807 157811 157817 157819 157823 157829 157831 157837 157843 157847 157849 157853 157859 157861 157867 157871 157873 157877 157879 157883 157885 157887 157888 157889 157891 157892 157893 157895 157897 157901 157903 157907 157909 157913 157919 157921 157927 157931 157933 157937 157943 157949 157951 157957 157961 157963 157969 157973 157979 157987 199269
A. | 2.6×7.3=1.898 | B. | 2.6×7.3=18.98 | C. | 2.6×7.3=189.8 | D. | 260×7.3=189.8 |