在横线上填上“>”、“<”或“=”.
(1)5.3÷1.5______5.3÷0.5
(2)6.9×0.5______6.9×1.1
(3)0.73+0.5______7.3+5
(4)0.65×0.9______0.65+0.9.
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解:
(1)5.3÷1.5≈3.53,5.3÷0.5=10.6;
3.53<10.6;
所以,5.3÷1.5<5.3÷0.5;
(2)6.9×0.5=3.45,6.9×1.1=7.59;
3.45<7.59;
所以,6.9×0.5<6.9×1.1;
(3)0.73+0.5=1.23,7.3+5=12.3;
1.23<12.3;
所以,0.73+0.5<7.3+5;
(4)0.65×0.9=0.585,0.65+0.9=1.55;
0.585<1.55;
所以,0.65×0.9<0.65+0.9.
故