11．认真计算
0 158360 158368 158374 158378 158384 158386 158390 158396 158398 158404 158410 158414 158416 158420 158426 158428 158434 158438 158440 158444 158446 158450 158452 158454 158455 158456 158458 158459 158460 158462 158464 158468 158470 158474 158476 158480 158486 158488 158494 158498 158500 158504 158510 158516 158518 158524 158528 158530 158536 158540 158546 158554 199269
| 312÷2+312= | （119-8）÷3= | 78-28+40= | 42÷7×5= |
| 12×8÷4= | 20×80÷4= | 270÷9×60= | 0÷7×20= |
| 10÷5×10÷5= | 15+15÷5= | 56÷7+12= | 14+16÷4= |
| 16+48÷6= | 0+24×2= | 0÷（31-27）= | 18-12÷3= |
