脱式计算.300-64×84÷284-1÷3- 1 3 ×8(2 4 5 +0.6÷ 6 35 )×2.
脱式计算.300-64×84÷284-1÷3-13×8(245+0.6÷635)×2.4[118-(1320+0.35)÷117]×3.2....
脱式计算.300-64×84÷284-1÷3- 1 3 ×8(2 4 5 +0.6÷ 6 35 )×2.4[1 1 8 -( 13 20 +0.35)÷1 1 7 ]×3.2.
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(1)300-64×84÷28, =300-5276÷28, =300-192, =108; (2)4-1÷3-
=4-
=4-(
=4-3, =1; (3)(2
=(2
=6.3×2.4, =15.12; (4)[1
=[1
=[1
=
=0.8. |
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