12.直接写出得数.
1800-200= | 9.5+0.5= | 125×0.8= | 0.25÷2= |
$\frac{1}{3}$×$\frac{3}{8}$= | 0.375÷25%= | 8-$\frac{7}{8}$= | $\frac{3}{5}$÷2+$\frac{3}{7}$= |
8.计算题
0 159497 159505 159511 159515 159521 159523 159527 159533 159535 159541 159547 159551 159553 159557 159563 159565 159571 159575 159577 159581 159583 159587 159589 159591 159592 159593 159595 159596 159597 159599 159601 159605 159607 159611 159613 159617 159623 159625 159631 159635 159637 159641 159647 159653 159655 159661 159665 159667 159673 159677 159683 159691 199269
0.05+$\frac{1}{25}$= | 10-10%= | 25$\frac{1}{7}$×4= |
16×$\frac{2}{3}$×$({9×\frac{1}{8}})$= | ($\frac{1}{2}+\frac{4}{9}$)×18= | 51×0.4×$\frac{1}{17}$= |
$({2.25-2\frac{1}{4}})÷({3\frac{1}{3}+4\frac{5}{8}})$= | $\frac{1}{4}+5\frac{2}{7}×\frac{1}{4}+3\frac{5}{7}÷4$= | 5.6×$\frac{4}{7}$+1.4×$\frac{4}{7}$= |
$\frac{1}{3}×\frac{1}{4}÷\frac{1}{3}×\frac{1}{4}$= |