3.用竖式计算下面各题.
①132×13= | ②720×36= | ③102×35= |
④260×40= | ⑤308×26= | ⑥238×45= |
2.直接写得数.
130×4= | 23×3= | 26×20= | 320÷8= |
815-65= | 6×12= | 80×20= | 320×30= |
1.下面算式中与16×15的积相同的算式是( )
A. | (16×2)×15 | B. | (16×2)×(15×2) | C. | (16×2)×(15÷2) |
20.读200032640时要读出( )个零.
0 160969 160977 160983 160987 160993 160995 160999 161005 161007 161013 161019 161023 161025 161029 161035 161037 161043 161047 161049 161053 161055 161059 161061 161063 161064 161065 161067 161068 161069 161071 161073 161077 161079 161083 161085 161089 161095 161097 161103 161107 161109 161113 161119 161125 161127 161133 161137 161139 161145 161149 161155 161163 199269
A. | 1 | B. | 2 | C. | 3 |