1: 0.16 780 0.028 0.084 0.63 0.018 0.24 4.2 0.024
2: < > > <
3: 6.8016 3.948 2.0468 1.634
4: 8.5+1.7×0.4 35.8×1.2--5.8×1.2 =8.5+0.68 =1.2×(35.8--5.8) =9.18 =1.2=30 =36
2.84×(8.5--1.2) 12.5×32×0.25 =2.84×7.3 =(12.5×8)×(0.25×4) =20.732 =100×1 =100
5: 0.16×34.5=5.52 ≈5.5
6: 38.6×1.3=50.18 |
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