A.229+314 | B.314-229 | C.543+314 |
A.三位数 | B.四位数 | C.三位数或者四位数 |
A.450 | B.460 | C.500 |
A.它们的和比1000大一些 | B.它们的和比800小一些 | C.它们的和肯定不到1000 |
A.697 | B.598 | C.606 |
A.300+100-2-3 | B.298+100+3 | C.398+100-3 |
A.1001 | B.1000 | C.101 |
A.= |
B.> |
C.< |
A.860-40=820 | B.120-20=140 | C.120-20=10 |
A.739-164 | B.903-164 | C.903-739 |