×= 1×= ÷= ÷=
÷= ÷5= 2÷= 0×=
3.5×= ×=
= 0.4+55%= 1.5-= 62.8÷3.14=
8×0.99= 1.05÷0.15= =
92-72= 6-3.7-2.3=