= = == = == = =
看图列式计算.
王大伯有一块正方形菜地(如图).王大伯想用这块菜地的种西红柿.(1)这块菜地的面积有多少平方米?(2)西红柿地有多少平方米?
直接写得数.42×25%= 11﹣= 1÷0.25= ×÷=×= += 31×198≈ 4.8×11﹣4.8=
口算大比拼5.6×9﹢5.6= ;×18= ;9.9÷0.3= ;100×÷= ;1÷0.1﹣1×0.1= .
直接写得数:6.3÷0.01 1+5% 0.125×8 ×0×.