少先队员为工厂糊纸袋，6人2小时能糊960个，照这样计算，如果8人要糊1920个，需要几小时？
直接写出得数．+=﹣=+=﹣= 10﹣﹣=====．
直接写得数===== 1﹣= 1﹣==
直接写出得数.+= 1﹣=﹣= 2.5×3.8×4=+= 10﹣9.12=+0.25= 0.65×9+0.65=
计算下面各题，能简算的要简算． ．
直接写得数﹣=﹣=+= 1﹣=+=﹣=
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﹣
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﹣
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﹣
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=．
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= 1﹣
= 1﹣
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+
= 1﹣
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﹣
= 2.5×3.8×4=
+
= 10﹣9.12=
+0.25= 0.65×9+0.65=
．
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= 1﹣
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