653.54+17.16=★70﹣23.23=
竖式计算26.7﹣17.5= 61.6+31.9= 30﹣1.65= 24.08+4.33=验算67.08﹣7.58=验算 32.5+17.45=验算 45.8﹣22.27=验算.
15﹣0.3= 6﹣0.5= 2.13+14= 0.91+1.25= 10﹣0.76=0.567+4.44= 0.37+0.6= 7.46+2.54= 45.9+1=
口算:1.5+0.5= ; 2.1+0.6= ; 0.8﹣0.76= ;2.38+0.7= ; 0.26﹣0.12= ; 9.6﹣2.8= .
口算0.46﹣0.06= 3.7+4.3= 1+0.55= 4.6﹣1.8=0.65+0.32= 10﹣9.9= 4+0.92= 4.1﹣1.1=0.05+0.5= 7.2+1.8= 1.7+0.37= 6.6﹣6=
用竖式计算.①3.63+0.87= ②13﹣7.86= ③8.5+11.75= ④7+3.02=