递等式计算.(1)149+587+51(2)85×0.75+15×75%(3)4×17×125(4)( 1 8 + 3 4
递等式计算.(1)149+587+51(2)85×0.75+15×75%(3)4×17×125(4)(18+34)×17(5)(13-15)×45(6)[1-(12×16...
递等式计算.(1)149+587+51(2)85×0.75+15×75%(3)4×17×125(4)( 1 8 + 3 4 )× 1 7 (5)( 1 3 - 1 5 )×45(6)[1-( 1 2 × 1 6 )]÷ 1 3 .
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(1)149+587+51, =149+51+587, =200+587, =787; (2)85×0.75+15×75%, =85×0.75+15×0.75, =(85+15)×0.75, =100×0.75, =75; (3)4×17×125, =4×125×17, =500×17, =8500; (4)(
=
=
(5)(
=
=15-9, =6; (6)[1-(
=[1-
=1×3-
=3-
= 2
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