(海淀区)脱式计算,能简算的要简算(1)745×2.4+6.2×225+2.4(2)[(0.8﹣415 )÷1313+1.76]×(0.75÷634 )
16-1= 16-3= 16-5=16-4= 16-0= 16-2=
17-2= 17-4= 18-6= 12-1= 7-5= 12-2=
9-3= 9-5= 18-2=11-1= 9-6= 9-1=
19-4= 19-6= 16-5=16-4= 16-0= 16-2=
7+2= 2+5= 12+5=11+1= 7+3= 12+1=