6.脱式计算.
0 160463 160471 160477 160481 160487 160489 160493 160499 160501 160507 160513 160517 160519 160523 160529 160531 160537 160541 160543 160547 160549 160553 160555 160557 160558 160559 160561 160562 160563 160565 160567 160571 160573 160577 160579 160583 160589 160591 160597 160601 160603 160607 160613 160619 160621 160627 160631 160633 160639 160643 160649 160657 199269
915÷3÷5= | 35×46-854= | 7×260÷4= |
920÷(4×2)= | 400-126÷3= | (126-78)×75= |