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7.2÷16 08脱式计算,怎么算?

7.2÷16+0.8 =0.45+0.8 =1.25

7.2÷1.6+0.8 4.5+0.8 =5.3

7.2÷1.6+0.8 =( 7.2÷8) ÷( 1.6÷8)+0.8 =0.9 ÷0.2+0.8 = 4.5+ 0.8 =5.3

(1)72×28+324÷6=2016+54=2070; (2)567÷7×24=81×24=1944; (3)248+52×68=248+3536=3784.

解:依题意得算式, 7.2÷0.08+7.2÷0.12 =90+60 =150 即7.2÷0.08+7.2÷0.12=150

18-7-9 =11-9 =2

(1)495÷55+495÷45=9+11=20(2)3.3×34+0.75×5710+75%=3.3×0.75+5.7×0.75+0.75=(3.3+5.7+1)×0.75=10×0.75=7.5(3)12345432155555×55555×614=11111×111115×11111×5×11111×254=14(4)[16.5×7.2÷557×(12.5%-18)]×1519=[16.5×7.2×755×(18-18...

请把题目写清楚

(1)460+540÷20×5 =460+27×5, =460+135, =595; (2)98.7×0.9+9.87 =98.7×(1-0.1)+9.87, =98.7×1-98.7×0.1+98.7, =98.7×2-9.87, =197.4-9.87, =187.53; (3)(11÷46+18÷23)×92 =(11 46 +18 23 )×92, =11 46 ×92+18 23 ×92, =22...

69.6÷2.4+17.92 =29+17.92 =46.92 15.8×10.1+0.62 =15.8x(10+0.1)+0.62 =158+1.58+0.62 =158+2.2 =160.2 6.8-20.16÷7.2 =6.8-2.8 =4

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