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简介:
1.4×1-1.2÷
= 1.4×1.5-1.2×
= 2.1-2
= 0.1
1.25×2+3.8÷0.8×
= 1.25×2+××
= 1.25×2.7+1
= 4.375
2.5×(2÷0.5-1×)
=2.5×(×2-×)
= ×
= 11
3+0.75×2÷2-2.5
= 3+××-2.5
= 3+ 1-2
=
1÷(2-20.9×0.1)
= 1÷(2.1-2.09)
= 1÷0.01
= 100
×0.5+2.4÷1
= × +2.4 ×
= + 2
= 2
+1.53÷×
= + ××
= +3
= 3
4.3-(+2.4÷2)
= 4.3-(+2.4×)
= 4.3-(0.6+0.9)
=4.3-1.5