( ) = 棵.
你能口算得又对又快吗?(1)0.02×500= 25×0.04= 3.2×2﹣6.4= 0.4×3+5.6=(2)8.08÷8= 5.4÷0.54= 2.33÷23.3﹣0.01= 15×0.2×0.2=(3)5.61×100﹣100= 26÷(1.7+0.9)= 2.7×4+2.3×4= 0.75÷3÷0.5=
直接写出结果(1)0.25×4= 1(2)4.8÷8= 0.6(3)0.5+0.5÷0.5= (4)50×0.8= 40(5)0.99÷33= 0.03(6)4×7.5×2.5= (7)4.5×0.1= 0.45(8)2.4÷0.8= 3(9)(2.7﹣2.7)×3.5= (10)1.3×7= 9.1(11)2÷0.4= 5(12)2.1×40÷10= .
4.3+5.8= 3.6+6.4= 0.74﹣0.34= 0.9﹣0.25= 5×4= 0.21×3= 0.64÷0.8= 0.48÷0.12= 88÷8= 1.1×9= 1÷0.25= 0÷0.4= 15÷0.3×0.1= 0.4÷0.2= (0.7+0.8)×3= 7×1.2+0.8= 1.8×4﹣1.2= (2.6﹣1.8)×0.5= 4+3.2÷0.8= 0.72÷72﹣0.1= 7.5÷2.5﹣0= .
5.6×1.5= 12.6÷0.28= .
24÷9= 32.1÷22= 30.1÷33= 7÷22= .