16.脱式计算,能简算的要简算:
0 157384 157392 157398 157402 157408 157410 157414 157420 157422 157428 157434 157438 157440 157444 157450 157452 157458 157462 157464 157468 157470 157474 157476 157478 157479 157480 157482 157483 157484 157486 157488 157492 157494 157498 157500 157504 157510 157512 157518 157522 157524 157528 157534 157540 157542 157548 157552 157554 157560 157564 157570 157578 199269
46.5×99+46.5 | 4.85×1.25×8 | (455-12.5×4)÷5 |
(0.5+0.25)×4 | 9.78-1.36-2.64 | 12.5+7.5×4.5 |