18.直接写出得数.
3.5-2.1= | 1.6+3.2= | 1-0.1= | 0.02+0.3= | 2.3+3.2= |
8.4-0.7= | 0.9-0.2= | 4.2+0.5= | 3.6+1.8= | 5+7.9= |
13.把1个整体平均分成100份,其中的41份用小数表示是( )
0 160321 160329 160335 160339 160345 160347 160351 160357 160359 160365 160371 160375 160377 160381 160387 160389 160395 160399 160401 160405 160407 160411 160413 160415 160416 160417 160419 160420 160421 160423 160425 160429 160431 160435 160437 160441 160447 160449 160455 160459 160461 160465 160471 160477 160479 160485 160489 160491 160497 160501 160507 160515 199269
A. | 41 | B. | 4.1 | C. | 0.41 |