①243-29-71
②13×25×4
③720÷18÷5
④35×98
⑤145+36+55+64
⑥76×101-76
①44×25
②146-47-53
③48×101-48
④43×201
⑤65+65×99
⑥125×32×25
5.2÷0.04= 1.32+0.8= 8 ÷8= 25+7.5=
51.51÷51= + ÷ = 1.5×2÷1.5×2= 149÷30≈