共30题用时5分钟
2.6×78+78×7.4=
7.26-(5.26-1.5)=
4.3×50×0.2=
8×(2.5+0.25)=
(1.5+0.25)×4=
5436÷18 =
0.12×0.5×0.16=
1.25×0.8×0.5=
102×45-328=
7.28×99+7.28=
1001-9036÷18=
3.8×5.25+14.5=
300-4263÷21=
403÷13×27=
0.81÷0.25+5.96=
0.96+9.6×9.9=
10-2.87-7.13=
1025-768÷32=
(25+4)×4=
(1.2+ 1.8)×4.5=
645-45×12=
1.25×8÷1.25=
640+128×45=
401×19+284=
2.5×7.1×4=
5.0-0.9+0.9=
5.37×0+4.63=
16.12×99+16.12=