6÷0.8= Р5×400= ×= ÷= 24÷= Р×-= ××= +(-)= 正确率:Р口算练习题八Р17×300= 0.98-0.09= 0.2+0.78= 600×700= Р×= ÷= 24÷= ×= Р0.56÷28= 0.36÷0.4= 0.4×0.5= 6×= Р += ×= ÷8= +=Р0.47+0.13= 4.5+4= 4-0.6= 0.95+0.05=Р1÷= ÷4= 3-1.95= -= Р×99+ = - = 25×4= 0.125×8=Р× ÷ = × ÷ × = 1- = 0.1-0.01= Р 0.22×102= 9÷0.25÷4= ×= 正确率:Р Р口算练习题九Р×= 1÷= ÷8= 7×= Р×12= ×= -= += Р÷= 14÷= 12÷= 1÷1%= Р 9.5+0.5= += 0÷×2= 1-= Р×= ÷= -= ××9= Р6.9×0.1= 4.9÷6.3= += ×=Р1――= += ÷=?9÷=?Р12÷= -= 6.8÷10%= 4.5+= Р301-199= 0.24×300= ÷= 2.5+0.25= Р×= 1÷= ÷60%= ×15=Р= = = ×+=Р0.25×3.97×4= (1.2+8.8)×0.4= 40×20%= Р×= -= 0.3÷6= 2.4×= 4.2÷= 1.25×0.7×8= 1-= ÷30= 1.4÷3.5= ×1.3+×3.7= (+)×12= (估算)49×301≈Р350×0.02= 1.9×4×0.5= 9×÷9×= 0.6÷0.2=Р正确率:Р计算练习题(混合运算和简便运算)Р÷+÷3 (1--)÷ (1÷+ ÷1)×8 Р+÷(-×) 12÷(1+-) ×4÷×4 Р-÷3+ ÷-× +÷Р×(+)÷ ÷[×(1-)] ×+×Р(+)×48 3-- ×+×0.6 ×+÷
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