第1个回答 2016-09-02
(31.8+3.2×4) ÷ 5 31.5×4÷(6+3)
0.64×25×7.8+2.2 2÷2.5+2.5÷2
36.25÷4.25×9.9 5180－705×6
24÷2.4－2.5×0.8 (4121+2389)÷7
671×15-974 469×12+1492 19.4×6.1×2.3
5.67×0.2-0.62 18.1×0.92+3.93 0.4×0.7×0.25
0.78+5.436+1 4. 8× 5÷4+1÷4 9. 9x5÷6+5÷6
10. 3÷4x8÷9-1÷3 14. 31x5÷6-5÷6 16. 5÷9x18-14x2÷7
20. 3x2÷9+1÷3 35. 95÷（64-45） 36. 178-145÷5×6+42
7.2÷0.8-1.2×5 6.5×（4.8-1.2×4） 28-(3.4+1.25×2.4)
2.55×7.1+2.45×7.1 777×9+1111×3 （31.8+3.2×4）÷5
31.5×4÷(6+3) 0.64×25×7.8+2.2 2÷2.5+2.5÷2
194－64.8÷1.8×0.9 36.72÷4.25×9.9 5180－705×6
24÷2.4－2.5×0.8 (4121+2389)÷7 671×15-974
469×12+1492 405×(3213-3189) 19.4×6.1×2.3
5.67×0.2-0.62 18.1×0.92+3.93 0.043×24+0.875