×10= ×= 1÷0.8= -= +=
15×= 1÷=+= 28×= --=
0.25×40= 1-0.11= + = 3÷8=
10.5÷15= 9.09+1.01= - = 95÷96=
10÷2.5= 2.4×0.5= -0.25=