6.9×99+9=9×(99+1)这是运用了( )进行简便计算的.
0 137438 137446 137452 137456 137462 137464 137468 137474 137476 137482 137488 137492 137494 137498 137504 137506 137512 137516 137518 137522 137524 137528 137530 137532 137533 137534 137536 137537 137538 137540 137542 137546 137548 137552 137554 137558 137564 137566 137572 137576 137578 137582 137588 137594 137596 137602 137606 137608 137614 137618 137624 137632 199269
| A. | 乘法分配律 | B. | 乘法结合律 | C. | 乘法的交换律 |