要简便的计算的 3.12*4+1.88*4= 0.88*105-0.88*5= 0.75*99+0.75= 3.12*4.7+4.7*5.88+4.7=8*0.6+12*0.6-3.2*0.6 1.53+3.62+0.38+4.47 7.35-0.73-1.27 9.6*28.5+0.285*40

来源:学生作业帮助网 编辑:作业帮 时间:2024/07/06 20:38:24
要简便的计算的 3.12*4+1.88*4= 0.88*105-0.88*5= 0.75*99+0.75= 3.12*4.7+4.7*5.88+4.7=8*0.6+12*0.6-3.2*0.6 1.53+3.62+0.38+4.47 7.35-0.73-1.27 9.6*28.5+0.285*40
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要简便的计算的 3.12*4+1.88*4= 0.88*105-0.88*5= 0.75*99+0.75= 3.12*4.7+4.7*5.88+4.7=8*0.6+12*0.6-3.2*0.6 1.53+3.62+0.38+4.47 7.35-0.73-1.27 9.6*28.5+0.285*40
要简便的计算的 3.12*4+1.88*4= 0.88*105-0.88*5= 0.75*99+0.75= 3.12*4.7+4.7*5.88+4.7=
8*0.6+12*0.6-3.2*0.6 1.53+3.62+0.38+4.47 7.35-0.73-1.27 9.6*28.5+0.285*40

要简便的计算的 3.12*4+1.88*4= 0.88*105-0.88*5= 0.75*99+0.75= 3.12*4.7+4.7*5.88+4.7=8*0.6+12*0.6-3.2*0.6 1.53+3.62+0.38+4.47 7.35-0.73-1.27 9.6*28.5+0.285*40
3.12*4+1.88*4=(3.12+1.88)*4=20
0.88*105-0.88*5=(105-5)*0.88=88
0.75*99+0.75=(99+1)*0.75=75
3.12*4.7+4.7*5.88+4.7=(3.12+5.88+1)*4.7=47
8*0.6+12*0.6-3.2*0.6=(8+12-3.2)*0.6=10.08
1.53+3.62+0.38+4.47=(1.53+4.47)+(3.62+0.38)=6+4=10
7.35-0.73-1.27=7.35-(0.73+1.27)=7.35-2=5.35
9.6*28.5+0.285*40=96*2.85+4*2.85=(96+4)*2.85=100*2.85=285