直接写出得数. 240÷6= 60×50= 270÷9= 11×80=21×80= 900÷3= 550×0= 2500÷5=5.3+2.6= 9.8﹣7.6= 320÷4= 70×13=
= = = == = = == = = == = = =
×1= 52﹣42= 0.75﹣0.5= ×= ÷= 125×0.08=0.5+0.02= ÷= ÷= 0.15×6= 12÷0.3= 0÷=
直接写得数.×16= 12÷= 24×= ×÷=1÷= ÷15= ÷= ×÷×=
直接写得数.10÷= ÷= ×= 55×÷=×2= 1÷= ÷= 0×+=
口算我最棒= 26×= = = == = = 6.4÷20%= 125%×8=