10.直接写出得数
77%+1.33= | $\frac{3}{4}$-$\frac{3}{8}$= | $\frac{5}{6}$×$\frac{3}{10}$= | 200×(1-40%)= |
45÷90%= | 1-1%= | 48×($\frac{1}{6}$-$\frac{1}{8}$)= | 1÷(1÷$\frac{3}{8}$)= |
9.一个圆柱的底面半径扩大2倍,高也扩大2倍,体积就( )
A. | 扩大2倍 | B. | 扩大4倍 | C. | 扩大8倍 |
8.小明在一次口算比赛中,做对了100题,错了25题,这次口算的正确率是( )
0 153566 153574 153580 153584 153590 153592 153596 153602 153604 153610 153616 153620 153622 153626 153632 153634 153640 153644 153646 153650 153652 153656 153658 153660 153661 153662 153664 153665 153666 153668 153670 153674 153676 153680 153682 153686 153692 153694 153700 153704 153706 153710 153716 153722 153724 153730 153734 153736 153742 153746 153752 153760 199269
A. | 25% | B. | 80% | C. | 75% |