26900800002690800000 690000070万
325÷25325÷13 143×6263×142
430×3043×300 280÷352800÷7×5
五百八十万八千58008000 25×(4×40)25×4+25×40
360÷45360÷9÷5 最大的八位数9999万
①308+56+192
②961-128-72
③32×125×25
④125×54-125×46
⑤48×99+48
⑥6400÷25÷4
25×4= 7.7-3.8= 1.6+2.9= 800÷2÷4=
65×10= 50×80= 36×11= 15+6-15+6=
①(125-40)×8
②125×16×25
③5900÷4÷25
④187×45+45×13
⑤564+157+326
⑥15×[(710+590)÷13]
①12.5×4.8
②28.5÷15×5.6
③21÷0.25÷0.4
④0.55×5.6+0.45×5.6
⑤24.6×18-24.6×8.
⑥20.9+8.5÷(5.2-3.5)
②4×(17×35)
③1000÷8×(121÷11)
④63×102-63×2
⑤25×(20+4)
⑥420÷[(206-198)×4]
①65×142-42×65
②209+102÷(52-35)
③487-187-139-61
④940×[128-(154-31)]
⑤44×25
⑥3000÷125÷8
①40×[128÷(52-48)]
②12.19-0.52-4.48+3.81
③125×32×25
④451+49÷ (52-45)
⑤3600÷15÷2
⑥54×23+78×54- 54
①9.74÷2.5÷0.4
②56.7÷0.5×0.4
③84.6-4.2÷0.25
④9.36÷(1.37-0.89)
⑤40.5÷0.5+10.75
⑥45.6÷6÷0.5