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脱式计算,能简算的要简算.0.89×4.8+0.89×5.29.4×...

(1)0.89×4.8+0.89×5.2=0.89×(4.8+5.2)=0.89×10=8.9;(2)9.4×0.96÷(5.4÷0.9)=9.4×0.96÷6=9.024÷6=1.504;(3)(8+0.8)×1.25=8×1.25+0.8×1.25=10+1=11;(4)0.175÷0.25÷0.4=0.175÷(0.25×0.4)=0.175÷0.1=1.75.

408-12×24 = 408 - 288 = 120 (46+28)×60 = 74 x 60 = 4440 42×50-17 = 2100- 17 = 2083 32+105÷5 = 32 + 21 = 53 420×(327-238) = 420 x 89 = 37380 (4121+2389)÷7 = 6510 ÷7 = 930 3.416÷(0.016×35) = 3.416 ÷0.56 = 6.1 0.8×[(10...

12×23= 13×26=

408-12×24 = 408 - 288 = 120 (46+28)×60 = 74 x 60 = 4440 42×50-17 = 2100- 17 = 2083 32+105÷5 = 32 + 21 = 53 420×(327-238) = 420 x 89 = 37380 (4121+2389)÷7 = 6510 ÷7 = 930 3.416÷(0.016×35) = 3.416 ÷0.56 = 6.1 0.8×[(10...

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