看图回答问题．（1）上海与天津，哪个城市气温高？5℃ ﹣2℃（2）天津与青岛，哪个城市气温高？（3）长春与天津，哪个城市气温低？（4）把4个城市的气温从高到低排列出来，并说一说你是怎么比较的．
直接写得数． 1÷= 0.32÷0.8= 2.3+3.57= 7.3﹣2.8=÷=+= 1÷×= 2×+5=+4﹣+4=×99+=
口算． 1÷0.5= 1﹣1÷1= 1.25××8=×5.6=÷5××5= 4×0×4= 120×（+）=+0.29+= 3﹣﹣=（﹣）×20=
直接写结果． 9×= 3﹣÷0.75=+1= 2÷= 0.9+99×0.9=×8÷×8= 1﹣﹣=﹣=××= 42÷[14﹣（50﹣39）]=
直接写出得数． 24.06+0.4= 180×40= 7﹣3.635= 50%÷2%=+=×12=÷= 3﹣=
直接写出得数． 4.8×50%= 3÷30%﹣4= 88÷11%=×40%= 9.8×20%+0.2×20%=÷=×8+8×=÷3×÷3=
= 0.32÷0.8= 2.3+3.57= 7.3﹣2.8=
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= 42÷[14﹣（50﹣39）]=
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