15.直接写得数.
| 0.45÷9= | 51×0.2= | 0.125×8= |
| 0×8.6= | 2.4÷0.08= | 0.1×10= |
14.( )保留两位小数是4.30.
| A. | 4.2947 | B. | 4.3089 | C. | 4.298 |
13.“甲数比乙数的5倍还多3.5,甲数是15,求乙数.”正确的列式是( )
| A. | (15-3.5)÷5 | B. | (15+3.5)÷5 | C. | 15÷5+3.5 |
12.与3.96×7.68的积相等的式子是( )
| A. | 3.96×76.8 | B. | 39.6×0.768 | C. | 0.396×0.768 |
11.“求6.8的一半是多少?”的正确列式是( )
0 127776 127784 127790 127794 127800 127802 127806 127812 127814 127820 127826 127830 127832 127836 127842 127844 127850 127854 127856 127860 127862 127866 127868 127870 127871 127872 127874 127875 127876 127878 127880 127884 127886 127890 127892 127896 127902 127904 127910 127914 127916 127920 127926 127932 127934 127940 127944 127946 127952 127956 127962 127970 199269
| A. | 6.8×0.2 | B. | 6.8÷0.5 | C. | 6.8×0.5 |