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下面各题,能简算的要用简便方法计算 4.02-3.5+0.98 7.08-0.74-1.26 7.75×[20÷(3.24-3.04)] 4.05÷0
下面各题,能简算的要用简便方法计算4.02-3.5+0.987.08-0.74-1.267.75×[20÷(3.24-3.04)]4.05÷0.81+2.43.7×4.5...
下面各题,能简算的要用简便方法计算 4.02-3.5+0.98 7.08-0.74-1.26 7.75×[20÷(3.24-3.04)] 4.05÷0.81+2.4 3.7×4.5-4.4×3.7 0.034×0.5×0.6.
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(1)4.02-3.5+0.98, =5-3.5, =1.5; (2)7.08-0.74-1.26, =7.08-2, =5.08; (3)7.75×[20÷(3.24-3.04)], =7.75×【20÷0.2】, =7.75×100, =775; (4)4.05÷0.81+2.4, =5+2.4, =7.4; (5)3.7×4.5-4.4×3.7, =3.7×0.1, =0.37; (6)0.034×0.5×0.6, =0.034×0.3, =0.0102. |
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