10个百10个千 1.1451.14 14.4
10.25×1.51.5 1245÷51345÷45 12×0.412÷0.4
①(3618÷18-145)×20
②6÷ - ÷6
③(21+ )× +
④ ×[ ÷( - )]
⑤3.5×98+35×0.2
523﹣23×7
4.97+6.38+5.03﹣4.38
60×()
×3.2+5.6×0.5+1.2×50%
()÷
生产时间/时
0
1
2
3
4
5
6
产量/吨
8
12
16
20
24
261﹣99= 17÷34= 2.1+0.79= 80×125%=
÷36= 38.38÷38= +×0= ×3÷×3=