7.脱式计算,能简算的要简算.
8.37-(2.5+6.837) | 12.5×32×2.5 | $\frac{4}{5}$÷[($\frac{3}{5}$+$\frac{1}{2}$)×2] |
77×$\frac{4}{5}$+23×$\frac{4}{5}$ | (1-0.8×$\frac{3}{4}$)÷$\frac{4}{5}$ | ($\frac{1}{3}$+$\frac{1}{6}$-$\frac{1}{9}$)×54 |
5.直接写得数.
0 163308 163316 163322 163326 163332 163334 163338 163344 163346 163352 163358 163362 163364 163368 163374 163376 163382 163386 163388 163392 163394 163398 163400 163402 163403 163404 163406 163407 163408 163410 163412 163416 163418 163422 163424 163428 163434 163436 163442 163446 163448 163452 163458 163464 163466 163472 163476 163478 163484 163488 163494 163502 199269
$\frac{5}{6}$÷$\frac{5}{6}$= | 3.14×202= | $\frac{8}{9}$×$\frac{9}{24}$= | 2÷1%= |
3π= | 703×59≈ | $\frac{1}{4}$+$\frac{1}{5}$= | 7.45+8.55= |
25÷(10%÷10)= | 5.2÷0.125÷8= | 3.5-$\frac{7}{15}$-$\frac{8}{15}$= | 4÷$\frac{5}{7}$×$\frac{10}{7}$= |