能简算的要简算。 0.48+4.8÷0.16 19.2÷12.5÷8 7.8×9
能简算的要简算。0.48+4.8÷0.1619.2÷12.5÷87.8×9.963–6.3–3.73.6×3.4+6.6×3.636×[(5–0.68)÷12]...
能简算的要简算。
0.48+4.8÷0.16 19.2÷12.5÷8 7.8×9.9 63–6.3–3.7
3.6×3.4+6.6×3.6 36×[(5–0.68)÷12] 展开
0.48+4.8÷0.16 19.2÷12.5÷8 7.8×9.9 63–6.3–3.7
3.6×3.4+6.6×3.6 36×[(5–0.68)÷12] 展开
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0.48+4.8÷0.16=0.48+30=30.48;
19.2÷12.5÷8= 19.2 ÷(12.5x8)=19.2 ÷100=0.192;
7.8×9.9=7.8x(10-0.1)=7.8x10-7.8x0.1 =78-0.78=77.22;
63–6.3–3.7=63-(6.3+3.7)=63-10=53;
3.6×3.4+6.6×3.6=3.6x(3.4+6.6)=3.6x10=36;
36×[(5–0.68)÷12]=36x(4.32÷12)=36÷12x4.32=3x4.32=12.96.
19.2÷12.5÷8= 19.2 ÷(12.5x8)=19.2 ÷100=0.192;
7.8×9.9=7.8x(10-0.1)=7.8x10-7.8x0.1 =78-0.78=77.22;
63–6.3–3.7=63-(6.3+3.7)=63-10=53;
3.6×3.4+6.6×3.6=3.6x(3.4+6.6)=3.6x10=36;
36×[(5–0.68)÷12]=36x(4.32÷12)=36÷12x4.32=3x4.32=12.96.
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