能简算的要简算3001-19983.9+456+6.1+516(12+13+18)×0.245000-105×340.15÷0.25+0.75×1.2[5815+(116-0.2)×1.5]÷160.-数学
题文
能简算的要简算
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答案
(1)3001-1998, =(3000+1)-(2000-2), =(3000-2000)+3, =1003; (2)3.9+4
=(3.9+6.1)+(4
=10+10, =20; (3)(
=
=0.12+0.08+0.03, =0.23; (4)5000-105×34, =5000-3570, =1430; (5)0.15÷0.25+0.75×1.2, =0.6+0.9, =1.5; (6)[5
=[5
=[
=
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