| 脱式计算,能简算的要简算. (1)475+660÷33×25 (2)400-14
(3)(
(4)5.84×1.36+1.36×3.16+1.36 (5)[1.9-6÷(2.4×5)]÷(14×0.2) (6)[(
|
| (1)475+660÷33×25 =475+20×25 =475+500 =975; (2)400-14
=400-(14
=400-100 =300; (3)(
=
=20+14-33 =1; (4)5.84×1.36+1.36×3.16+1.36, =(5.84+3.16+1)×1.36, =10×1.36, =13.6; (5)[1.9-6÷(2.4×5)]÷(14×0.2) =[1.9-6÷12]÷2.8 =[1.9-0.5]÷2.8 =1.4÷2.8 =0.5; (6)[(
=[
=[
=
=17. |
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