A.566+(1+99) | B.567+100-1 | C.567+100+1 |
A.156+344 | B.975-485 | C.418+142 |
A.510 | B.610 | C.710 |
A.188+300 | B.401+108 | C.600-96 | D.376+198 |
A.200 | B.600 | C.100 |
A.506+182 | B.615+205 | C.433+288 |
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.○>□ | B.○<□ | C.○=□ | D.无法确定 |
A.457+252 | B.332+628 | C.832+729 | D.385+279 |
A.332+118 | B.450-118 | C.118+332 | D.450+118 |