19.哪一道式子的商与37.8÷0.16的商相等?( )
A. | 378÷0.16 | B. | 37.8÷1.6 | C. | 3780÷1.6 | D. | 3780÷16 |
14.直接写得数
0 160437 160445 160451 160455 160461 160463 160467 160473 160475 160481 160487 160491 160493 160497 160503 160505 160511 160515 160517 160521 160523 160527 160529 160531 160532 160533 160535 160536 160537 160539 160541 160545 160547 160551 160553 160557 160563 160565 160571 160575 160577 160581 160587 160593 160595 160601 160605 160607 160613 160617 160623 160631 199269
2.2+4= | 0.3×0.3= | 0.09×1000= | 7.2÷100= |
1.7-0.7= | 0.4÷0.1= | 15×0.4= | 1÷0.25= |