1: 0.24 93 0.054 0.08 0.94 0.01 0.09 4.3
2: 4 8.6 0.8 1.25 5.4 4.6 2.8 2.3 2 2.3 0.01 4.6 1 4.6 0.01
3: 2.128 2.256 0.3456
4: 0.4×1.34×2.5 0.45×0.2×50 =0.4×2.5×1.34 =0.45×(0.2×50) =1×1.34 =0.45×10 =1.34 =4.5
3.5×2.01 1.45×6.5+0.55×6.5 =3.5×(2+0.01) =6.5×(1.45+0.55) =3.5×2+3.5×0.01 =6.5×2 =7+0.035 =13 =7.035
6.12×99+6.12 5.9×101--5.9 =6.12×(99+1) =5.9×(101--1) =6.12×100 =5.9×100 =612 =59
5: > < < > = |
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