2000÷125 179+83+21 32×68+68×68
(103×12-236)÷25 99×102 384÷[16×(21-18)]
①42×[344÷(26-18)]
②52+644+38+356
③8×12×125
①( ﹣ )×24
②0.36×99+0.36
③20.8﹣(9.6+0.125÷12.5%)
④( ﹣ ÷2)×
⑤2.5×16×12.5
⑥0.5÷[ ﹣( ﹣ )]
①54×98
②(+﹣)×24
③4.86×[1÷(2.1﹣2.09)]
④8﹣