5.下列算式中,与0.36÷2.4的商相等的算式是( )
| A. | 36÷24 | B. | 0.36÷24 | C. | 3.6÷24 |
4.一个两位小数用四舍五入法取近似值是7.6,这个数最小可能是( )
| A. | 7.55 | B. | 7.59 | C. | 7.64 |
2.把29看成小数,并把小数点向右移动两位,结果是( )
0 139271 139279 139285 139289 139295 139297 139301 139307 139309 139315 139321 139325 139327 139331 139337 139339 139345 139349 139351 139355 139357 139361 139363 139365 139366 139367 139369 139370 139371 139373 139375 139379 139381 139385 139387 139391 139397 139399 139405 139409 139411 139415 139421 139427 139429 139435 139439 139441 139447 139451 139457 139465 199269
| A. | 29.00 | B. | 290.0 | C. | 2900 |