直接写得数.9÷0.3= 6.3+7= 0.1﹣0.01= 4.5a﹣a=0.33 = 9.5﹣9.5×0= 1.25×0.7×0.8= 0.1÷0.25=
直接写出得数:45%﹣= ÷+5%= ×25%= +15%=×= ÷= ×= ÷=
(1)6×0.3= (2)= (3)= (4)15×0.4=(5)= (6)= (7)= (8)=
口算:3.14×2= 3.14×3= 3.14×4= 3.14×5= 3.14×6=3.14×7= 3.14×8= 3.14×9= 3.14×2.7= +=4+= 2﹣= ×= 6÷= ÷5=×= ﹣= 3.14×2+3.14×0.7= + = .
0.6×0.7= 2.4×5= 0.5×7.6= 40×0.45= 0.8×0.4=4.5×5= 3﹣0.54= 0.6×11= 2.4+4.8= 0.45×1000=0.7÷100= 1×3.12= 12.7+4.3= 0.54﹣0.24= 1.25×80=3.6+0.45= 2.5×2.4×0.4= 5﹣0.27﹣1.73= 2.8+3.45+1.2= 0.35+99×0.35=
12×0.6= 4.5÷= ﹣= 28×20%=1.6×= 1÷= 36×= 15÷=