递等式计算.3×12-33.46÷0.35 12.74-0.125+2.26-9.875 0.25×3.2×1.25 5×13×0.4 89÷[(25
递等式计算.3×12-33.46÷0.3512.74-0.125+2.26-9.8750.25×3.2×1.255×13×0.489÷[(25+110)×34]45+45...
递等式计算.3×12-33.46÷0.35 12.74-0.125+2.26-9.875 0.25×3.2×1.25 5×13×0.4 89÷[(25+110 )×34] 45+45×19
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3×12-33.46÷0.35
=36-95.6
=-59.6
12.74-0.125+2.26-9.875
=(12.74+2.26)-(0.125+9.875)
=15-10
=5
0.25×3.2×1.25
=0.25×(4×0.8)×1.25
=(0.25×4)×(0.8×1.25)
=1×1
=1
5×13×0.4
=5×0.4×13
=2×13
=26
89÷[(25+110 )×34]
=89÷(135×34)
=89÷4590
≈0.02
45+45×19
=45×(1+19)
=45×20
=900
=36-95.6
=-59.6
12.74-0.125+2.26-9.875
=(12.74+2.26)-(0.125+9.875)
=15-10
=5
0.25×3.2×1.25
=0.25×(4×0.8)×1.25
=(0.25×4)×(0.8×1.25)
=1×1
=1
5×13×0.4
=5×0.4×13
=2×13
=26
89÷[(25+110 )×34]
=89÷(135×34)
=89÷4590
≈0.02
45+45×19
=45×(1+19)
=45×20
=900
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